000 00345nam a2200145Ia 4500
008 221001s1970 xx 000 0 eng d
020 _a416687008
082 _a003 DUC
100 _aDuckworth, W. E.
245 2 _aA guide to operational research
250 _a2nd ed.
260 _aLondon
_bMethuen
_c1970
300 _a156p.
942 _2ddc
_cBK
999 _c9735
_d9735