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American coed college honor fraternity
Phi Sigma Pi National Honor Fraternity (ΦΣΠ) is a gender-inclusive and mixed-sex national honor fraternity based in the United States. The fraternity is
Phi_Sigma_Pi
African-American fraternity
Sigma Pi Phi (ΣΠΦ), also known as The Boulé, is an African American professional fraternity. Founded in Philadelphia, Pennsylvania, in 1904, it is the
Sigma_Pi_Phi
American collegiate social fraternity
Phi Sigma Phi (ΦΣΦ) (Phi Sig) is a national fraternity in the United States founded on July 30, 1988 in South Bend, Indiana by chapters formerly of Phi
Phi_Sigma_Phi
North American collegiate fraternity
approached Tau Phi Delta members, claiming to represent a historic fraternity called Sigma Pi that dated to the 18th century. Tau Phi Delta accepted Patterson's
Sigma_Pi
Kappa Pi and dispersed to multiple fraternities. Merged with Phi Iota Alpha. Merged with Phi Epsilon Pi. Formerly a member of NIC. Merged with Phi Sigma and
List_of_social_fraternities
Phi Beta Sigma (ΦΒΣ) is an international historically Black fraternity. Founded on January 9, 1914, on the campus of Howard University in Washington, D
List of Phi Beta Sigma chapters
List_of_Phi_Beta_Sigma_chapters
Chapter formed from Phi Sigma Alpha, established in 1927. Chapter formed from Epsilon Pi, established in 1928. Chapter formed from Sigma Phi Lambda, established
List of Alpha Epsilon Pi chapters
List_of_Alpha_Epsilon_Pi_chapters
North American collegiate fraternity
Alpha Sigma Phi (ΑΣΦ), commonly known as A Sig, is an intercollegiate men's social fraternity. Founded in 1845 at Yale University in New Haven, Connecticut
Alpha_Sigma_Phi
American collegiate fraternity (1915–1939)
Phi Pi Phi (ΦΠΦ) was a social fraternity founded at Northwestern University in 1915. It merged with Alpha Sigma Phi in 1939. Phi Pi Phi was founded on
Phi_Pi_Phi
fraternity in 1909. Sigma Delta Tau, originally named Sigma Delta Phi, was established in 1917, Lambda Upsilon Lambda in 1982, and Lambda Pi Chi in 1988. Fraternities
List of Cornell University fraternities and sororities
List_of_Cornell_University_fraternities_and_sororities
Phi Sigma Pi is a national honor fraternity. In the following list, active chapters are listed in bold and inactive chapters are listed in italics. When
List_of_Phi_Sigma_Pi_chapters
Sigma Pi Phi, also known as The Boulé, is an African American professional fraternity. Founded in Philadelphia, Pennsylvania, in 1904, it is the oldest
List_of_Sigma_Pi_Phi_members
Sigma Pi Phi is an African American professional fraternity. Founded in Philadelphia, Pennsylvania, in 1904, it is the oldest Greek lettered fraternity
List_of_Sigma_Pi_Phi_chapters
Phi Sigma Kappa is a men's social and academic fraternity with approximately 65 active chapters and provisional chapters in North America. Interest groups
List of Phi Sigma Kappa chapters
List_of_Phi_Sigma_Kappa_chapters
Omega, Alpha Delta Phi, Beta Theta Pi, Delta Kappa Epsilon, Zeta Psi, Theta Delta Chi, Kappa Kappa Kappa, Sigma Chi, Phi Delta Theta, Phi Kappa Psi, and Psi
Dartmouth College fraternities and sororities
Dartmouth_College_fraternities_and_sororities
North American collegiate sorority
Phi Sigma Sigma (ΦΣΣ), colloquially known as Phi Sig, was the first collegiate nonsectarian sorority to allow membership of women of all faiths and backgrounds
Phi_Sigma_Sigma
Sigma Phi is an international intercollegiate men's social fraternity that was established at Yale University in 1845. It absorbed 4 chapters of Phi Phi
List of Alpha Sigma Phi chapters
List_of_Alpha_Sigma_Phi_chapters
"Gender Inclusion: Resolution" (PDF). Phi Sigma Pi. August 2014. Retrieved February 5, 2023. "History | Phi Sigma Pi National Honor Fraternity". phisigmapi
List of LGBTQ and LGBTQ-friendly fraternities and sororities
List_of_LGBTQ_and_LGBTQ-friendly_fraternities_and_sororities
Phi Omega Pi. Baldwin-Wallace's reorganized as the local, Theta Tau Delta, then affiliated with Phi Mu. The following are its known chapters of Sigma
Defunct North American collegiate sororities
Defunct_North_American_collegiate_sororities
Delta Sigma Pi is an American professional business fraternity for men and women. It was founded in 1907 at the School of Commerce, Accounts and Finance
List of Delta Sigma Pi chapters
List_of_Delta_Sigma_Pi_chapters
from Sigma Delta Phi, established in 1909. Chapter formed from Alpha Alpha Alpha (local), established in 1903. Chapter formed from Pi Kappa Phi (local
List of Pi Kappa Alpha chapters
List_of_Pi_Kappa_Alpha_chapters
Defunct American collegiate Jewish fraternity
National Interfraternity Conference. It merged into Alpha Epsilon Pi in 1947. Sigma Tau Phi was founded at the University of Pennsylvania in 1918. It was
Sigma_Tau_Phi
by absorbing Gamma Phi, established in 1920. Chapter closed due to the American Civil War. Reformed in 1996 by absorbing Rho Sigma Tau (local), established
List_of_Chi_Phi_chapters
chapter originated as Sigma Beta (local) in 1920. This chapter originated as Zeta Pi (local) in 1920. This chapter originated as Phi Sigma (local) earlier in
List_of_Phi_Mu_chapters
American Greek life system
2004–2022 Phi Kappa Sigma (ΦΚΣ), 1854–1861, 1872–2002 Phi Rho Sigma (ΦΡΣ) Phi Society Phi Theta Psi (ΦΘΨ), 1888–1895 Pi Epsilon, 1970–1992 Pi Kappa Alpha
University of Virginia fraternities and sororities
University_of_Virginia_fraternities_and_sororities
Defunct American Catholic collegiate sorority
Pi Lambda Sigma (ΠΛΣ) was an American collegiate sorority for Catholic women. It merged with Theta Phi Alpha in 1952. Pi Lambda Sigma was founded on June
Pi_Lambda_Sigma
established in 1927. Chapter formed from Phi Alpha Pi (local), established in the 1920s. Chapter formed from Alpha Sigma Phi (local), established in 1927. After
List of Delta Phi Epsilon (social) chapters
List_of_Delta_Phi_Epsilon_(social)_chapters
American collegiate fraternity
Pi Kappa Phi (ΠΚΦ), commonly known as Pi Kapp(s), is an American Greek Letter secret and social fraternity. It was founded by Andrew Alexander Kroeg Jr
Pi_Kappa_Phi
chapter of Phi Sigma Kappa with the national merger. Chapter formed from Pi Sigma Epsilon, established in 1912. Chapter formed from Sigma Delta Tau, established
List of Phi Sigma Epsilon chapters
List_of_Phi_Sigma_Epsilon_chapters
Retrieved June 26, 2023. "Pi Iota". Alpha Phi Alpha Fraternity Inc. - Illinois District. Retrieved April 15, 2023. "Pi Sigma". Alpha Phi Alpha Fraternity Inc
List of Alpha Phi Alpha chapters
List_of_Alpha_Phi_Alpha_chapters
Sigma Pi is a collegiate fraternity in North America. It was founded as Tau Phi Delta at Vincennes University on February 26, 1897. In 1907, the fraternity
List_of_Sigma_Pi_chapters
American medical fraternity
Phi Rho Sigma Society (ΦΡΣ) is a co-educational medical fraternity founded by medical students at Northwestern University in 1890. Phi Rho Sigma Medical
Phi_Rho_Sigma
International collegiate fraternity
three national fraternities merged with Pi Lambda Phi: Phi Beta Delta, Beta Sigma Tau and Beta Sigma Rho. Phi Beta Delta was founded at Columbia University
Pi_Lambda_Phi
American college sorority (1920–1933)
changed its name to Sigma Phi Beta in 1927 and merged with Phi Alpha Chi in 1928. Sigma Phi Beta merged into Phi Omega Pi in 1933. Sigma Sigma Omicron was formed
Sigma_Sigma_Omicron
indicated in italics. Chapter formed from Lambda Sigma Phi, established in 1899. It absorbed Lambda Phi in 1924. Chapter formed from Ah Bing, established
List of Alpha Omicron Pi chapters
List_of_Alpha_Omicron_Pi_chapters
International collegiate fraternity
as a result of the war. In 1940, Sigma Omega Psi joined Alpha Epsilon Pi adding three chapters, as did Sigma Tau Phi in 1947. The next two decades were
Alpha_Epsilon_Pi
North American general sorority
Beta Sigma Phi International (ΒΣΦ) is an international noncollegiate sorority. Founded in Abilene Kansas, in 1931 by Walter W. Ross "for the social, cultural
Beta_Sigma_Phi
2007 "Alpha Sigma Brother to Appear on CBS' Big Brother". pikapp.org. College Stav, retrieved December 15, 2023 "Documents · Pi Kappa Phi · myUMBC". myUMBC
List_of_Pi_Kappa_Phi_members
American gender-neutral collegiate fraternity
Theta Pi Sigma (ΘΠΣ) is an American queer-focused, gender-neutral fraternal organization. It was established in 2005 at the University of California, Santa
Theta_Pi_Sigma
Canadian collegiate fraternity
upon which it resides. Phi Kappa Pi Fraternity was founded in 1913, by two previously existing and separate organizations. Sigma Pi (local), founded in Toronto
Phi_Kappa_Pi
1961. Chapter formed from Pi Tau Phi, established in 1925. Chapter formed from Phi Kappa Pi. Chapter formed from Gamma Sigma Upsilon, established in 1955
List of Alpha Delta Pi chapters
List_of_Alpha_Delta_Pi_chapters
Probability distribution
) . {\displaystyle f(x)={\frac {1}{\sqrt {2\pi \sigma ^{2}}}}\exp {\left(-{\frac {(x-\mu )^{2}}{2\sigma ^{2}}}\right)}\,.} The parameter μ {\displaystyle
Normal_distribution
Number, approximately 3.14
f(x)={1 \over \sigma {\sqrt {2\pi }}}\,e^{-(x-\mu )^{2}/(2\sigma ^{2})}.} The factor of 1 2 π {\displaystyle {\tfrac {1}{\sqrt {2\pi }}}} makes the area
Pi
"Zeta Phi Beta Sorority Inc., Sigma Pi Chapter | Engage AU". American University. Retrieved February 23, 2023. "Sigma Pi Chapter". Zeta Phi Beta Sorority
List of Zeta Phi Beta chapters
List_of_Zeta_Phi_Beta_chapters
North American collegiate fraternity
Sigma Phi Epsilon (ΣΦΕ), commonly known as SigEp, is a social college fraternity for male college students in the United States. It was founded on November
Sigma_Phi_Epsilon
Sigma Phi Epsilon is an American social college fraternity. It was founded on November 1, 1901, at Richmond College, which is now the University of Richmond
List of Sigma Phi Epsilon chapters
List_of_Sigma_Phi_Epsilon_chapters
5. February 16, 2012. Retrieved August 10, 2023. Alpha Sigma Phi The Quarterly of Phi Pi Phi - Autumn 1931 Bartnick, Allison (April 21, 2017). "Fraternity
List_of_Sigma_Nu_chapters
formed from Kappa Phi Delta, established in 1921. Chapter formed from Pi Tau Sigma, established in 1929. Chapter formed from Sigma Alpha, established
List of Sigma Alpha Mu chapters
List_of_Sigma_Alpha_Mu_chapters
North American collegiate fraternity
members. Beta Theta Pi is the oldest of the three fraternities that formed the Miami Triad, along with Phi Delta Theta and Sigma Chi. Students at Miami
Beta_Theta_Pi
North American collegiate fraternity
Phi Sigma Kappa (ΦΣΚ), colloquially known as Phi Sig or PSK, is a men's social and academic fraternity with approximately 74 active chapters and provisional
Phi_Sigma_Kappa
Delta Sigma Phi is a fraternity founded in 1899 at City College of New York. It was the first fraternity based on religious and ethnic acceptance. The
List of Delta Sigma Phi chapters
List_of_Delta_Sigma_Phi_chapters
American pedagogical sorority
Pi Kappa Sigma (ΠΚΣ or Pi Kap) was an American national collegiate sorority. Established in 1894 at the Michigan State Normal School, it was the first
Pi_Kappa_Sigma
American collegiate sorority (1922–1946)
itself as the Alpha chapter of Phi Alpha Chi. Phi Alpha Chi merged into Sigma Phi Beta prior to its merger into Phi Omega Pi on August 10, 1946. One source
Phi_Omega_Pi
North American Jewish collegiate fraternity (1904–1970)
Phi Epsilon Pi (ΦΕΠ) fraternity, active between 1904 and 1970 and now dormant, with a predominantly Jewish membership, was founded in New York City and
Phi_Epsilon_Pi
italics. Pi Lambda Phi assigned names to chapters that were defunct at the time of its mergers with Beta Sigma Rho, Beta Sigma Tau, and Phi Beta Delta
List of Pi Lambda Phi chapters
List_of_Pi_Lambda_Phi_chapters
Beta Sigma Phi is an international noncollegiate sorority. It was established on April 30, 1931, in Abilene, Kansas. By 1975, it had established more
List of Beta Sigma Phi chapters
List_of_Beta_Sigma_Phi_chapters
Social-professional fraternity of engineers
Sigma Phi Delta (ΣΦΔ) is an international social-professional fraternity of engineers. As "The Premier International Fraternity of Engineers", the organization
Sigma_Phi_Delta
active at MIT. Chapter absorbed Phi Sigma Delta. Chapter formed from Phi Pi, established in 1923. Chapter formed from Sigma Pi Alpha, established in 1920.
List of Tau Epsilon Phi chapters
List_of_Tau_Epsilon_Phi_chapters
Sigma Kappa is a sorority founded in1874 at Colby College in Waterville, Maine. In 1959, Sigma Kappa and Pi Kappa Sigma merged, which created many of
List_of_Sigma_Kappa_chapters
Chapter formed from Sigma Phi Delta, established in 1920. Chapter formed from Sigma Phi Delta, established in 1921. Chapter formed from Pi Delta, established
List of Phi Sigma Sigma chapters
List_of_Phi_Sigma_Sigma_chapters
Michael (February 27, 2024). "Kappa Sigma reestablishes the Sigma-Pi Chapter in Albany, New York". Kappa Sigma Fraternity. Retrieved December 6, 2025
List_of_Kappa_Sigma_chapters
Alpha Phi Sigma is an international criminal justice honor society. The society was established at Washington State University in January 1942. It is
List of Alpha Phi Sigma chapters
List_of_Alpha_Phi_Sigma_chapters
Phi Sigma Delta was a collegiate fraternity established in 1909 with a predominantly Jewish membership. It merged into Zeta Beta Tau in 1969. Following
List of Phi Sigma Delta chapters
List_of_Phi_Sigma_Delta_chapters
in 1949. Chapter formed from Lambda Sigma Pi (local), established in 1939. Chapter formed from Epsilon Phi Sigma (local), established in 1937. Chapter
List of Alpha Sigma Tau chapters
List_of_Alpha_Sigma_Tau_chapters
American Jewish fraternity (1910–1972)
Sigma Rho (ΒΣΡ) was an American social fraternity founded at Cornell University in 1910. Most of its active chapters were absorbed into Pi Lambda Phi
Beta_Sigma_Rho
originated as Phi Lambda Sigma (local) in 1870 and became the Alpha Pi chapter of Beta Sigma Omicron national in 1929. When Beta Sigma Omicron merged
List_of_Alpha_Phi_chapters
Shorthand used in statistics
{\begin{aligned}\Pr(\mu -n\sigma \leq X\leq \mu +n\sigma )=\int _{\mu -n\sigma }^{\mu +n\sigma }{\frac {1}{{\sqrt {2\pi }}\sigma }}e^{-{\frac {1}{2}}\left({\frac
68–95–99.7_rule
chapter originated as Phi Beta (local) in 1907. This chapter originated as Phi Beta (local) in 1913. This chapter originated as Sigma Rho (local) in 1914
List of Gamma Phi Beta chapters
List_of_Gamma_Phi_Beta_chapters
American collegiate Native American fraternity
Phi Sigma Nu (ΦΣΝ) is the oldest and largest Native American fraternity in the United States. It was founded in 1996 in North Carolina. Phi Sigma Nu is
Phi_Sigma_Nu
Pi Beta Phi is an international women's fraternity founded in 1867. It was the first national secret college society for women based on Greek-letter fraternities
List_of_Pi_Beta_Phi_chapters
Asian-American-interest collegiate fraternity (1929–2023)
Pi Alpha Phi Fraternity, Inc. (ΠΑΦ, also Pi Alpha Phi or PAPhi) was an American university-level fraternity. It was founded in 1929 at the University
Pi_Alpha_Phi
American collegiate fraternity 1910–1985
its merger with the Phi Sigma Kappa (ΦΣΚ) fraternity. In 1985, most Phi Sigma Epsilon chapters participated in the merger. Phi Sigma Kappa incorporated
Phi_Sigma_Epsilon
North American collegiate fraternity
fraternity to Sigma Chi. It is possible this action could have been forced upon the group, as there was already a Sigma Phi Society. Much of Sigma Chi's heraldry
Sigma_Chi
American women's honor society for commerce
in Seattle, Washington. It merged with Gamma Epsilon Pi, a similar organization, in 1922. Phi Sigma Chi was founded on February 17, 1919, at the University
Phi_Sigma_Chi_(honorary)
Organization that regulates collegiate honor societies
organizations: Alpha Omega Alpha, the Order of the Coif, Phi Beta Kappa, Phi Kappa Phi, Sigma Xi, and Tau Beta Pi. The Association of College Honor Societies (ACHS)
Association of College Honor Societies
Association_of_College_Honor_Societies
Field theory of a point particle confined to move on a fixed manifold
field space Φ {\displaystyle \Phi } can be chosen to be any Riemannian manifold. Historically, this is the "sigma" of the sigma model; the historically-appropriate
Sigma_model
absorbing Sigma Lambda Sigma, established in 1920. After going dormant, it reformed as a colony in 1979. Chapter reformed in 1959 by absorbing Pi Alpha Mu
List of Sigma Delta Tau chapters
List_of_Sigma_Delta_Tau_chapters
Defunct American collegiate social fraternity
Pi (ΑΚΠ) was an American collegiate social fraternity founded in 1921 at the Newark College of Engineering. In 1946, it merged with Alpha Sigma Phi.
Alpha_Kappa_Pi
Phi Kappa Sigma is an American men's general collegiate fraternity. Following is a List of chapters of Phi Kappa Sigma. In the first decades, several names
List of Phi Kappa Sigma chapters
List_of_Phi_Kappa_Sigma_chapters
Chapter was formed by absorbing Sigma Beta Phi, established in 1903. Chapter was formed by absorbing Sigma Theta Pi, established in 1911. It was re-established
List of Sigma Alpha Epsilon chapters
List_of_Sigma_Alpha_Epsilon_chapters
American association of national, collegiate, professional fraternities and sororities
Gamma, Phi Alpha Delta, Phi Beta Gamma, Sigma Nu Phi Medicine: Omega Upsilon Phi, Phi Beta Pi, Phi Rho Sigma, Theta Kappa Psi Pharmacy: Kappa Psi, Phi Delta
Professional Fraternity Association
Professional_Fraternity_Association
formed from Lambda Phi Delta, established in 1923. Chapter formed from Sigma Kappa Phi, established in 1923. Chapter formed from Pi Epsilon Beta, established
List of Phi Kappa Tau chapters
List_of_Phi_Kappa_Tau_chapters
Organization North American sororities
1904, Alpha Omicron Pi and Sigma Kappa in 1905, Alpha Delta Pi and Alpha Gamma Delta and Zeta Tau Alpha in 1909, Delta Zeta in 1910, Phi Mu in 1911, and Kappa
National Panhellenic Conference
National_Panhellenic_Conference
Lambda Sigma as part of the national merger. Originated from the co-ed Marquette Club. Originated as Sigma Phi (local) in 1917, Absorbed Pi Lambda Sigma chapter
List of Theta Phi Alpha chapters
List_of_Theta_Phi_Alpha_chapters
Defunct American collegiate Jewish fraternity
1932 as chapters either closed, became locals or merged with Phi Epsilon Pi. Sigma Lambda Pi was established in April 1915 at New York. Its founders were
Sigma_Lambda_Pi
Trade association of collegiate men's fraternities
Lambda Phi Epsilon - About "SLB FACTS". April 22, 2011. Retrieved August 10, 2023. "Chapters". "Sigma Phi Epsilon – Building Balanced Men". "Sigma Pi Website
North American Interfraternity Conference
North_American_Interfraternity_Conference
Sigma Pi Delta (local), established in 1924. Chapter originated as Gamma Sigma Alpha (local), established in 1941. Chapter originated as Phi Tau Phi (local)
List of Alpha Sigma Alpha chapters
List_of_Alpha_Sigma_Alpha_chapters
Pi Kappa Sigma was an American national collegiate pedagogical sorority. It was established in 1894 at the Michigan State Normal School. On May 15, 1959
List of Pi Kappa Sigma chapters
List_of_Pi_Kappa_Sigma_chapters
Notation in general relativity
\phi _{0}+2\pi \phi _{1}+(\rho -2\varepsilon )\phi _{2}\,,\\[1ex]\Delta \phi _{0}-\delta \phi _{1}&=(2\gamma -\mu )\phi _{0}-2\tau \phi _{1}+\sigma \phi
Newman–Penrose_formalism
International historically African American collegiate fraternity
the Sigma Alpha Epsilon fraternity House, and Kelly worked at Beta Theta Pi fraternity house. Coincidentally, an article about a Negro fraternity Pi Gamma
Alpha_Phi_Alpha
The Pi Kappa Phi fraternity has founded a total of 232 chapters in 41 U.S. states and the District of Columbia. As of May 3, 2013, there are 178 active
List_of_Pi_Kappa_Phi_chapters
American secondary student organizations
school fraternity. It was followed by Gamma Sigma, Alpha Zeta, Alpha Phi, Sigma Psi, Alpha Chi Sigma, Pi Phi, Gamma Delta Psi, Eta Kappa, and more. The
High school fraternities and sororities
High_school_fraternities_and_sororities
"Delta Pi History". Delta Pi Reunion 2002. Retrieved June 18, 2023. "About | The Delta Phi Chapter of Delta Sigma Theta Sorority, Inc". The Delta Phi Chapter
List of Delta Sigma Theta collegiate chapters
List_of_Delta_Sigma_Theta_collegiate_chapters
Lambda Pi Chi, sorority Lambda Sigma Upsilon, fraternity Lambda Theta Alpha, sorority Lambda Upsilon Lambda, fraternity Omega Phi Beta, sorority Phi Iota
List of Syracuse University fraternities and sororities
List_of_Syracuse_University_fraternities_and_sororities
Defunct American collegiate Jewish fraternity
Phi Alpha (ΦΑ) was an American historically Jewish fraternity founded in 1914. It merged with Phi Sigma Delta in 1959. It was a member of the National
Phi_Alpha_(fraternity)
National service fraternity (founded in the US, 1925)
member was initiated in the Rho Pi chapter of Alpha Phi Omega at the University of California, San Diego. Alpha Phi Omega is organized to provide community
Alpha_Phi_Omega
Sigma Phi Gamma Delta Phi Kappa Psi Phi Kappa Tau Phi Mu Delta Phi Sigma Kappa Pi Kappa Alpha Pi Kappa Phi Sigma Alpha Epsilon Sigma Alpha Mu Sigma Beta
List of Rutgers University fraternities and sororities
List_of_Rutgers_University_fraternities_and_sororities
Probability distribution
x-\mu }{\sigma }}\right)\\[6pt]&=\varphi {\left({\frac {\ln x-\mu }{\sigma }}\right)}{\frac {1}{\sigma x}}\\[6pt]&={\frac {1}{x\sigma {\sqrt {2\pi }}}}\exp
Log-normal_distribution
Machine learning technique
L_{\text{PPO}}(\phi ):=E_{x\sim D_{\text{RL}},y\sim \pi _{\phi _{t}}(y|x)}\left[\min \left({\frac {\pi _{\phi }^{RL}(y|x)}{\pi _{\phi _{t}}^{RL}(y|x)}}A(x
Reinforcement learning from human feedback
Reinforcement_learning_from_human_feedback
2022. Chapter formed by absorbing Alpha Pi, established in 1921. Chapter formed by absorbing Sigma Alpha Phi, established in 1926. Chapter started as
List of Beta Theta Pi chapters
List_of_Beta_Theta_Pi_chapters
travel, tourism, insurance
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PHI SIGMA-PI
PHI SIGMA-PI
PHI SIGMA-PI
PHI SIGMA-PI
PHI SIGMA-PI
PHI SIGMA-PI
PHI SIGMA-PI
PHI SIGMA-PI
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