American Society of Agronomy. (1992). Journal of natural resources and life sciences education. American Society of Agronomy.
Chicago-referens (17:e uppl.)American Society of Agronomy. Journal of Natural Resources and Life Sciences Education. Madison, WI: American Society of Agronomy, 1992.
MLA-referens (9:e uppl.)American Society of Agronomy. Journal of Natural Resources and Life Sciences Education. American Society of Agronomy, 1992.
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