00293nam a2200109Ia 4500008004100000040002500041082001500066100001800081245003500099260004100134300000800175230627s9999    xx            000 0 und d  aNORSU-SiacNORSU-Sia  a512.13 R18  aRatti,  J. S. 0aCollege algebra and trigometry  bMacmillan Publishing Co., Inc.c1978  a412