000 00273nam a2200109Ia 4500
008 140917b1989 xxu||||| |||| 00| 0 eng d
082 _a530.1, GUP
100 _aB D Gupta
245 _aMathematical physics
260 _aNew Delhi :
_bVikas,
_c1989
700 _aGupta, B D
999 _c228925
_d228925