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Dyfyniad Arddull ChicagoLevin, Richard I. Production Operations Management: Contemporary Policy for Managing Operating Systems. New Delhi: Tata McGraw-Hill, 1974.
Dyfyniad MLALevin, Richard I. Production Operations Management: Contemporary Policy for Managing Operating Systems. Tata McGraw-Hill, 1974.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.