000 00286nam a2200121Ia 4500
008 220201s1971 xx 000 0 eng d
082 _a658.56
_bTIW
100 _aTiwari, RA
245 0 _aProduction planning & control
260 _bNew Delhi: NPC
_c1971
300 _a52
942 _2ddc
999 _c77692
_d77692