00261nam a2200109Ia 4500008004100000041000800041082002400049100001500073245004600088260000900134300000800143211209s1970    xx            000 0 und d  aeng  a510.246 N70 LEN/CHA  aLENNOX S C  aMATHEMATICS FOR ENGINEERS AND SCIENTISTS   c1970  a443