000 00289nam a22001097a 4500
008 150827b xxu||||| |||| 00| 0 eng d
020 _a0412135000
082 _a658.403 3 DUC
100 _aDUCKWORTH W.E.
245 _aA GUIDE TO OPERATIONAL RESEARCH
260 _aLONDON
_bCHAPMAN AND HALL
_c1977
999 _c1445
_d1445