000 00294nam a2200121Ia 4500
008 140113s9999 xx 000 0 und d
082 _a311 K5
100 _a"Duckworth, E."
245 _aGuide to operatinal research
260 _a1965
_bMethuen & Coff
_cLondon
300 _a153
942 _cBK
999 _c56833
_d56833