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Planning Insecticide Application and Timber Harvesting in a Spruce Budworm Epidemic
Robert E. Stevens
George P. Markin
Valentine M. Carolin
出版
U.S. Department of Agriculture, Forest Service, Cooperative State Research Service
, 1984
URL
http://books.google.com.hk/books?id=xEDdAQAACAAJ&hl=&source=gbs_api