000			00367 a2200133 4500
090			_c8833 _d8833
100			_aChurchman, C. W.
245			_aIntroduction to operations research
260			_aNew York : _bJohn Wiley, _c1957.
300			_ax, 645p.
650			_aOperations research
700			_aAckoff, Russell L. _aArnoff, Leonard E.
942			_cBK _kT57.6 .C488x 1957
999			_c8833 _d8833