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what class?
gamma psi class
what chapter?
psi beta
1922
founded at oklahoma university (frank G. Brooks)
How many chapters?
520
what nations?
puerto rico + United states
when was psi beta established
1979
1923
Simpson college student interested tri beta for grant
jan 1925
gamma chapter, western state college installed
dec 1925
delta chap (first 2 members) southwestern college
1928
petition for chapter @ china
march 1930
BIOS published
1955
100th chapter university of delaware alpha psi
1968
national affiliation w/bio
1971
special plaque w/ BBB