000 00293nam a2200121Ia 4500
008 190216s9999||||xx |||||||||||||| ||und||
100 _a"Srivastav ,nigam,bishamber,sahai"
245 0 _aIndustrial Economis
260 _bS Chand & Co
_c1967
300 _a557p
650 _aCommerce
942 _cBK
999 _c4616
_d4616