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Google圖書搜尋
Characteristic Marking Secretions of the Forms Lapponicus and Scandinavicus of Bombus Lapponicus Fabr. (Hymenoptera, Apidae)
Gunnar Bergström
Bo G. Svensson
出版
Göteborg Univ.
, 1973
URL
http://books.google.com.hk/books?id=LflmYgEACAAJ&hl=&source=gbs_api