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Dyfyniad Arddull ChicagoCRAWFORD C MERLE. NEW PRODUCTS MANAGEMENT. 6TH. BOSTON: IRWIN MCGRAW-HILL, 2000.
Dyfyniad MLACRAWFORD C MERLE. NEW PRODUCTS MANAGEMENT. 6TH. IRWIN MCGRAW-HILL, 2000.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.