000 00270nam a2200109Ia 4500
020 _a007099319X
082 _a658.4034
100 _aBILLY , E, GILLET
245 _aINTRODUCTION TO OPERATION RESEARCH A COMPUTER ORIENTED ALOGORILHIMIC APPRO
260 _c1976
942 _cBK
999 _c2031
_d2031