000 00262nam a2200109Ia 4500
008 210901s1976 xx 000 0 eng d
082 _a530.15 GUP
100 _aGupta P P
245 0 _aMathematical physics
260 _aMerrut
_bKedarnath
_c1976
942 _2ddc
_cBK
999 _c11816
_d11816