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Alpha Pi Sigma
http://www.alphapisigma.org/
Founded at San Diego State University in 1990.
Alpha Pi Sigma - Cal Poly Pomona - Beta Chapter
http://www.csupomona.edu/~aps/
Founded March 1, 1996.
Alpha Pi Sigma - San Diego State University - Alph
http://www-rohan.sdsu.edu/~aps/
Founded on March 10, 1990.