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By: Tyler, Jocelyn,Edition:Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1941Volume: no.406Series:Holding Institution: U.S. Department of Agriculture, National Agricultural LibrarySubjects: AgSpace Disease and pest resistance genetic resistance Internet resource Nematode diseases of plants nematode tolerance pest resistance pest tolerance plant parasitic nematodes Plants root knot nematode Root-knot rootknot nematode root-knot nematodes varietal resistanceBHL Collections: