00356nam a2200133Ia 4500008004100000020001500041041001200056082001600068100002300084245004800107260004700155300000800202650001200210221030s9999    xx            000 0 und d  a8122402836  aEnglish  a105.23bCha  aP. K. Chattopadyay 0aMathematical Physicscby P. K. Chattopadyay  bNew Age International PubaNew Delhic1996  a352  aPhysics