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Some Environmental Factors Affecting Development and Emergence of the Douglas-fir Beetle, Dendroctonus Pseudotsugae Hopkins (Coleoptera: Scolytidae), in the Laboratory

Roger B. Ryan

出版	Oregon State College, 1959
URL	http://books.google.com.hk/books?id=waJZuAAACAAJ&hl=&source=gbs_api