File:1932-1933. Map showing areas sampled for Dendroctonus brevicomis winter mortality in the ponderosa pine type in Washington, Oregon, and California. (33344416140).jpg
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Map showing areas sampled for Dendroctonus brevicomis winter mortality in the ponderosa pine type in Washington, Oregon, and California. Photo by: Al Ransford Date: December 1932 and February 1933 Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Bureau of Entomology Collection; La Grande, Oregon. Image: BUR-8830 To learn more about this photo collection see: Wickman, B.E., Torgersen, T.R. and Furniss, M.M. 2002. Photographic images and history of forest insect investigations on the Pacific Slope, 1903-1953. Part 2. Oregon and Washington. American Entomologist, 48(3), p. 178-185. For additional historical forest entomology photos, stories, and resources see the Western Forest Insect Work Conference site: <a href="http://wfiwc.org/content/history-and-resources" rel="nofollow">wfiwc.org/content/history-and-resources</a> Image provided by USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection: <a href="https://www.fs.usda.gov/main/r6/forest-grasslandhealth" rel="nofollow">www.fs.usda.gov/main/r6/forest-grasslandhealth</a> |
| Date | |
| Source | 1932-1933. Map showing areas sampled for Dendroctonus brevicomis winter mortality in the ponderosa pine type in Washington, Oregon, and California. |
| Author | R6, State & Private Forestry, Forest Health Protection |
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This image or file is a work of a United States Department of Agriculture employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain.
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This image, originally posted to Flickr, was reviewed on 31 December 2018 by the administrator or reviewer 1989, who confirmed that it was available on Flickr under the stated license on that date. |
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| current | 15:35, 7 May 2018 | | 1,297 × 1,891 (225 KB) | OceanAtoll (talk | contribs) | Transferred from Flickr via #flickr2commons |
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