00266nam a2200109Ia 4500020001800000082001700018100001500035245002500050250001200075260004400087650002500131  a9788125930969  a530.15 GUP/M  aGupta, B.D 0aMathematical Physics  a4TH ED.  bVikas Publishing HouseaNew Delhic2011  aMathematical Physics