000 00277nam a2200121Ia 4500
008 220201s1985 xx 000 0 eng d
082 _a530
_bGUP
100 _aGupta,BD
245 0 _aMathematics physics
260 _bVani education&book
_c1985
300 _a1238
942 _2ddc
999 _c83587
_d83587