00381nam a2200121Ia 4500008004100000040002500041082001500066100008400081245002700165250001800192260004100210300000800251230627s9999    xx            000 0 und d  aNORSU-SiacNORSU-Sia  a371.42 J71  aJones, Arthur J.; revised and updated by Buford Steffler and Norman R. Stewart  0aPrinciples of guidance  aSixth Edition  bMcGraw-HIll Book Company, Inc.c1970  a244