Citace podle APA (7th ed.)

Não informado. (1946). Iowa farm science. Iowa State University of Science and Technology, Cooperative Extension Service.

Citace podle Chicago (17th ed.)

Não informado. Iowa Farm Science. Ames, Iowa: Iowa State University of Science and Technology, Cooperative Extension Service, 1946.

Citace podle MLA (8th ed.)

Não informado. Iowa Farm Science. Iowa State University of Science and Technology, Cooperative Extension Service, 1946.

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