00285nam a2200109Ia 4500008004100000041000800041082002200049100001400071245003800085260004400123300000800167211209s1978    xx            000 0 und d  aeng  a512.1 N78 MRA/KOM  aMRACHEK L  aTECHNICAL VOCATIONAL MATHEMATICS   aNEW DELHIbPRENTICE-HALL OF INDIAc1978  a320