Não informado. (1914). Annual report of the Iowa Agricultural Experiment Station. Iowa State College of Agriculture and Mechanic Arts.
Chicago Style (17. basım) AtıfNão informado. Annual Report of the Iowa Agricultural Experiment Station. Ames, Iowa: Iowa State College of Agriculture and Mechanic Arts, 1914.
MLA (8th ed.) AtıfNão informado. Annual Report of the Iowa Agricultural Experiment Station. Iowa State College of Agriculture and Mechanic Arts, 1914.
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