000 00275nam a2200109Ia 4500
008 160710s1980 xx 000 0 und d
100 _aGUPTA, B D
245 _aMATHMETICAL PHYSICS
260 _aGAZIYABAD UP
_bVIKAS PUBLICATION HOUSE
_c1980
300 _a1238
942 _2ddc
_cB
999 _c44352
_d44352