. The deterioration of beetle-killed Douglas-fir in western Oregon and Washington. . Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Wright, Kenneth H; Harvey, G. M. (George Mather), 1922-. Portland, Or. : Pacific Northwest Forest and Range Experiment Station, Forest Service, U. S. Dept. of Agriculture

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Keywords: ., bookcentury1900, bookcollectionameri, bookcollectionbiodiversity