00450nam a2200145Ia 450000500170000000800410001704100080005808200150006610000270008124500330010826000330014130000090017499900190018395201020020220260720174655.0260720s1991    xx            000 0 und d  aeng  a500.7 KIST  aKishore, Lalit9270057  aTeaching of physical science  aNew DelhibDoaba Housec1991  a295p  c244221d244221  001040708BEDaALbALd2026-07-20l0o500.7 KISTpBED02613r2026-07-20 17:46:55w2026-07-20yBK