00263nam a2200109 a 450000500170000008200200001710000170003724500250005425000180007926000360009730000200013320251203091800.0  a530.15,bD, raj  aRajput, B.S.  aMathematical physics  a10th rev. ed.  aMeerutbPragati Prakashanc1994  axvi, 982p, 24cm