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Bureau of Entomology and Plant Quarantine Articles Published in 1948
United States. Bureau of Entomology and Plant Quarantine. Division of Insect Survey and Information
出版
United States Department of Agriculture, Agricultural Research Administration, Bureau of Entomology and Plant Quarantine
, 1949
URL
http://books.google.com.hk/books?id=Eo9HAQAAIAAJ&hl=&source=gbs_api