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Browsing Extension Service -- Pacific Northwest Extension Publishing by Author "Al-Khatib, Kassim"

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Browsing Extension Service -- Pacific Northwest Extension Publishing by Author "Al-Khatib, Kassim"

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  • William, R. D.; Al-Khatib, Kassim; Oregon State University. Extension Service; Washington State University. Cooperative Extension; University of Idaho. Cooperative Extension System; United States. Dept. of Agriculture ([Corvallis, Or.] : Oregon State University Extension Service ; [Pullman, Wash.] : Washington State University Cooperative Extension ; [Moscow, Idaho] : University of Idaho Cooperative Extension System ; [Washington, D.C.] : U.S. Dept. of Agriculture, 1995-08)
    Controlling weeds that compete with Christmas trees is essential to producing quality trees. Weeds have several negative effects

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