00512nam a2200157Ia 450000500170000000800410001704100080005808200150006610000250008124500220010626000400012830000090016865000230017799900190020095201350021920250729165333.0250729s2005    xx            000 0 und d  aeng  a371.4 VENT  aVenkataiah S9221215  aScience Education  aNew DelhibAnnual Publicationc2005  a274p  aTechnology9221216  c234908d234908  001040708BEDaALbALd2025-07-29eSita Book Houseg160.00l0o371.4 VENTpBED00227r2025-07-29 16:53:33v160.00w2025-07-29yBK