000 00299nam a2200133Ia 4500
008 220201s1989 xx 000 0 eng d
082 _a650
_bGUP
100 _aGupt,B.K.
245 0 _aVYAVASAYIK ADDHAYAN KE TATVA
250 _a1st
260 _bAsha Prakashan
_c1989
300 _a488
942 _2ddc
999 _c6282
_d6282