000 00305nam a2200121Ia 4500
008 221117b |||||||| |||| 00| 0 eng d
040 _aBGL
_cBGL
082 _a658.8ENR;M
100 _aEnrick, Norbert Lloyd
245 0 _aManagement Operations Research
260 _aNew Delhi
_bAmerind
_c1978
942 _cGB
999 _c23891
_d23891