00334nam a2200133Ia 4500082002100000100000700021245007500028250000900103260002700112300001500139490003600154500000500190700000500195  aRb518.5425 M426  ad  aMathematica, a systems for doing mathematics by computer version 2.2b  a4th.  bWolfram Researchc1993  a68p. Index  aUser's guide for the Unix Shell  a  a