Hamberg, D. (1966). R & D: Essays on the economics of research and development. Random House.
Chicago-viite (17. p.)Hamberg, Daniel. R & D: Essays on the Economics of Research and Development. New York: Random House, 1966.
MLA-viite (9. p.)Hamberg, Daniel. R & D: Essays on the Economics of Research and Development. Random House, 1966.
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