Não informado. (2021). Station Bulletin. Purdue University, Agricultural Experiment Station.
Citace podle Chicago (17th ed.)Não informado. Station Bulletin. Lafayette, Ind: Purdue University, Agricultural Experiment Station, 2021.
Citace podle MLA (8th ed.)Não informado. Station Bulletin. Purdue University, Agricultural Experiment Station, 2021.
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