Mitchell, G. (1972). Operational research: Techniques and examples. English Universtities.
Dyfyniad Arddull ChicagoMitchell, G.H. Operational Research: Techniques and Examples. London: English Universtities, 1972.
Dyfyniad MLAMitchell, G.H. Operational Research: Techniques and Examples. English Universtities, 1972.
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