00357nam a2200145Ia 4500008004100000020001500041041001200056082001600068100001600084245004100100250000800141260003700149300001000186650001500196221030s9999    xx            000 0 und d  a0706996836  aEnglish  a105.23bGup  aB. D. Gupta 0aMathematical Physicscby B. D. Gupta  a2nd  bVikas Pub HouseaNew Delhic2002  a15.14  aBB Physics