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Dyfyniad Arddull ChicagoRavindran, A., Don T. Philips, and James J. Solberg. Operations Research: Principles and Practice. New York: John Wiley & Sons, 2000.
Dyfyniad MLARavindran, A., et al. Operations Research: Principles and Practice. John Wiley & Sons, 2000.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.