. 1980-1990 national program of research for forests and associated rangelands. --. Forests and forestry Research United States; Rangelands Research United States. . 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 United States. Forest Service. [Washington, D. C. ?] : U. S. Dept. of Agriculture, Forest Service

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