Não informado. (2007). Report of the Division of the Agriculture. Iowa State College, Division of the Agriculture.
Chicago-viite (17. p.)Não informado. Report of the Division of the Agriculture. Ames, Iowa: Iowa State College, Division of the Agriculture, 2007.
MLA-viite (8. p.)Não informado. Report of the Division of the Agriculture. Iowa State College, Division of the Agriculture, 2007.
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