000 00284nam a2200109Ia 4500
008 220201s1990 xx 000 0 eng d
100 _aRICHARD B
245 0 _aTHEORY AND PROBLEM OF OPRATIONAL AND RESEARCH
260 _aNEW YORK
_bSCHAUMS OUTLINE
_c1990
300 _a328
942 _2ddc
999 _c93107
_d93107