National Research Council (U.S.). Board on Agriculture & ebrary, Inc. (1989). Investing in research: A proposal to strengthen the agricultural, food, and environmental system. National Academy Press.
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Dyfyniad Arddull Chicago
National Research Council (U.S.). Board on Agriculture and Inc ebrary. Investing in Research: A Proposal to Strengthen the Agricultural, Food, and Environmental System. Washington, D.C.: National Academy Press, 1989.
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Dyfyniad MLA
National Research Council (U.S.). Board on Agriculture and Inc ebrary. Investing in Research: A Proposal to Strengthen the Agricultural, Food, and Environmental System. National Academy Press, 1989.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.