000			004330000a22001570004500
245			_aOperation research : methods and problems
100			_aSasieni, Mauice _922372
100			_aYaspan, Arthur _922373
100			_aFriedman, Lawrence _96847
260			_aNew York _bWiley _c1959
300			_axi, 316p. : ill.
080			_a005.31 _bS3
650			_aOPERATIONS RESEARCH-methods & problems
041			_aEN
942			_cBK _02
999			_c115819 _d115819