00577nam a2200193 a 450000500170000002000150001708200160003210000160004824500250006425000170008926000440010630000300015063000250018096400190020599700200022499900170024495200610026195200610032220251203091133.0  a0706996836  a530.15bGUP  aGupta, B D.  aMathematical Physics  a2nd Rev. ed.  aNew DelhibVikas Publishing Housec1996  axii, 1238 p.b25 cm.cPB.  aMathematical Physics  bEngcdefg_  a85992 W 34710 W  c31320d31320  02104070aPUbPUd1998-04-09l0o530.15 GUPp85992yBK  02104070aPUbPUd2000-03-24l0o530.15 GUPp34710yBK