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   Zalman Usiskin
   Zalman Usiskin is an educator best known as the Director of the University of Chicago School Mathematics Project. A faculty member since 1969, he also has taught junior and senior high-school mathematics and has authored and co-authored many textbooks, including a six-volume series used as part of ...
   Found op http://en.wikipedia.org/wiki/Zalman_Usiskin
   
   

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