00283nam a2200121Ia 4500008004100000100001400041245003000055260003100085300000900116650001200125942000700137999001700144190216s9999||||xx |||||||||||||| ||und||  aSingh S P 0aAdvance Practical Physics  bPragathi   Prakashanc2000  a482p  aPhysics  cBK  c33729d33729