00274nam a2200109Ia 4500008004100000082001500041100001800056245003500074250000900109260003300118300001300151190710s9999    xx            000 0 und d  a530.72 In2  aPrakash, Indu 0aText book of practical physics  a16th  aAllahabadbKitab Mahalc1976  axxxv,452