00271nam a2200109Ia 4500008004100000041000800041082001800049100001800067245003700085260003100122300000800153211209s1993    xx            000 0 und d  aeng  a621.8 N93 RAV  aRAVINDRA, A S  aMECHANICAL ENGINEERING SCIENCES   aBANGALOREbV K PUBS.c1993  a308