000 00302nam a2200121Ia 4500
008 231001s1994 xx 000 0 eng d
082 _a640
100 _aVerma, Pramila , Pandey, Kanti
245 0 _aPrayogic grah vigyan
260 _aDelhi
_bDelhi University
_c1994
300 _a664
942 _2ddc
_cBK
999 _c39494
_d39494