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Douglas-fir Tussock Moth Handbook
R. C. Beckwith
R. R. Mason
H. Gene Paul
其他書名
How to Determine the Number of Douglas-fir Tussock Moth Eggs from Egg Mass Weight
出版
Department of Agriculture, Combined Forest Pest Research and Development Program
, 1982
URL
http://books.google.com.hk/books?id=uyv8mQEACAAJ&hl=&source=gbs_api
