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Google圖書搜尋
Identifying the Spruce Budworm and Its Damage
Bruce A. Montgomery
Gary A. Simmons
John A. Witter
出版
Michigan Cooperative Forest Pest Management Program
, 1983
URL
http://books.google.com.hk/books?id=0oVqAQAACAAJ&hl=&source=gbs_api