00281nam a2200121Ia 4500008004100000100001400041245002500055260003300080300001000113650001200123942000700135999001700142190216s9999||||xx |||||||||||||| ||und||  aGupta B D 0aMathematical Physics  bVani Educational Booksc1978  a1238p  aPhysics  cBK  c33111d33111