File:1974. Tom Gregg records data for three different temperature and humidity checks hygrothermograph; sling slycrometer, and separate thermometer-hygrometer. Douglas-fir tussock moth control project. (35161765811).jpg
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| Description |
Tom Gregg records data for three different daily temperature and humidity checks: hygrothermograph; sling psychrometer; and separate thermometer-hygrometer. Douglas-fir tussock moth control project. Photo by: Unknown Date: June 1974 Credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection. Collection: Region 6, Forest Health Protection slide collection; Regional Office in Portland, Oregon. For more information about this project see: Graham, D.A.; J. Mounts; D. Almas. 1975. 1974 Cooperative Douglas-fir tussock moth control project: Oregon, Washington, Idaho. Portland, OR: USDA Forest Service, Pacific Northwest Region. 74 p. 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 | Taken in June 1974 |
| Source | 1974. Tom Gregg records data for three different temperature and humidity checks: hygrothermograph; sling slycrometer, and separate thermometer-hygrometer. Douglas-fir tussock moth control project. |
| Author | R6, State & Private Forestry, Forest Health Protection |
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This image was originally posted to Flickr by USDA Forest Service at https://flickr.com/photos/151887236@N05/35161765811 (archive). It was reviewed on 4 May 2018 by FlickreviewR 2 and was confirmed to be licensed under the terms of the Public Domain Mark. |
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This image is a work of the Forest Service of the United States Department of Agriculture. As a work of the U.S. federal government, the image is in the public domain.
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| current | 00:05, 4 May 2018 | | 3,600 × 2,381 (3.83 MB) | MechQuester (talk | contribs) | Transferred from Flickr via #flickr2commons |
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