39 resultados para Weed interference
em University of Michigan
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Mode of access: Internet.
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"February 23, 1981."
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Published also thesis (PH. D.) Columbia University, 1912.
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Issued 1987- in parts; part II has title: Illinois weed science research report.
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Thesis--University of Illinois.
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"Serial no. 95-117."
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"September 1987."
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Mode of access: Internet.