TY  - BOOK
AU  - Duckworth, W.E.
TI  - A guide to operatioinal research
U1  - 65.012.1(026) L7 
PY  - 1977///
CY  - London
PB  - Chapman and Hall
KW  - Gear, A.E., joint author
KW  - Lockett, A.G., joint author
KW  - W.E.Duckworth, A.E.Gear (and) A.G.Lockett.
KW  - Operations research
ER  -