National research council Board of Agriculture. (1988). Nutrient requirements of swine (10.). National Academy press.
Chicago-tyylinen lähdeviittausNational research council Board of Agriculture. Nutrient Requirements of Swine. 10. National Academy press, 1988.
MLA-viiteNational research council Board of Agriculture. Nutrient Requirements of Swine. 10. National Academy press, 1988.
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