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A Survey of Robin (Turdus Migratorius) Populations in Relation to Dutch Elm Disease Control and Other Insecticide Uses

Gerald Charles Kettunen

出版	Michigan State University of Agriculture and Applied Science. Department of Zoology, 1961
URL	http://books.google.com.hk/books?id=GCk5FwOgmJQC&hl=&source=gbs_api