Corey, E. R. (1962). Industrial marketing: Cases and concepts. Prentice Hall Inc.
Dyfyniad Arddull ChicagoCorey, E. Raymond. Industrial Marketing: Cases and Concepts. New Jersey: Prentice Hall Inc, 1962.
Dyfyniad MLACorey, E. Raymond. Industrial Marketing: Cases and Concepts. Prentice Hall Inc, 1962.
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