A guide to operational research/
Eric Duckworth [from old catalog]
A guide to operational research/ - London, Methuen [1965] - 153 p. illus. 21 cm.
65009195
Operations research.
HD20.5 / .D8 1962
A guide to operational research/ - London, Methuen [1965] - 153 p. illus. 21 cm.
65009195
Operations research.
HD20.5 / .D8 1962
