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Problems and SolutionsNorman Schaumberger, Mohammad K. Azarian, David Doster, Florentin Smarandache, Chico Problem Group, Edward T. H. Wang, Harry D'Souza, John F. Loase, Dave Ohlsen, Murray S. Klamkin, Walter Blumberg, Alan Wayne, Eugene Levine, Keith Durham, Donald Teets, Brian Anderson, Barry Brunson, Stephen Noltie, Luz M. DeAlba, Novshadian Haik, Kee-Wai Lau, Benjamin G. Klein, Y. H. Harris Kwong, Armel Mercier, Allen Schwenk and H.-J. Seifert · The College Mathematics Journal · 1990