000 00276nam a2200109Ia 4500
008 190719s9999 xx 000 0 und d
100 _aB B Bansal/ C L Tyagi
245 0 _aVyapaarik tatha audhyogik sanniyam
260 _aNew Delhi
_bR Chand
_c1989
650 _aMath
942 _cBK
999 _c6547
_d6547