000 00383nam a2200145Ia 4500
008 210210b1978 xxu||||| |||| 00| 0 eng d
082 _a530.15 GUPM
100 _aGUPTA (B D).
245 _aMathematical physics.
260 _aN D
_bVikas publishing house pvt ltd
_c1978
300 _axiii,1240
650 _aMathematical Physics
690 _aMathematical Physics
906 _a039413
999 _c89718
_d89718