00364nam a2200133Ia 4500020001800000100001600018245002100034260004200055650001200097700001500109942000700124999001500131952008400146  a9788121901468  aKhurmi, R.S 0aMaterial Science  bS. Chand And CompanyaNew Delhic2013  aPhysics  aSedha, R.S  cBK  c5455d5455  001040708PHYaGBCTLbGBCTLcF30d2023-11-14g225.00o620.11 KHU/Mp54249yBK