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Uninfected Elm Wood as a Source of the Bark Beetle (Scolytus Multistriatus Marsham) Carrying the Dutch Elm Disease Pathogen

Amy A. GessnerCharles Jesse BlanfordDonald Louis CollinsEarl M. HughesEdwin Wood CakeHarry Brooks NaylorMabel A. RollinsManson Bruce LinnWilliam Arthur RawlinsJean Warren

出版	Cornell University Agricultural Experiment Station, 1940
URL	http://books.google.com.hk/books?id=foBURlxIaC0C&hl=&source=gbs_api