000 00297nam a2200109Ia 4500
020 _a0070393737
100 _aRobert E Machol
245 _aElementary Systems Mathematics: Linear Programming for Business and the Social Sciences
260 _c1976
_bMGH
_aNew York
300 _axviii+267
942 _cBK
999 _c8089
_d8089