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4Published 1976“...Bitterroot National Forest, US Forest Service,...”
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5Published 1988“...United States Dept. of Agriculture, Forest Service,...”
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6
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7Published 1969“...Northeastern Forest Experiment Station, Forest Service, U.S. Dept. of Agriculture,...”
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8Published 1972“...North Central Forest Experiment Station, Forest Service, U.S. Dept. of Agriculture,...”
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9
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10
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11by Burns, Russell M.“...Dept. of Agriculture, Forest Service : For sale by the Supt. of Docs., U.S. G.P.O.,...”
Published 1990
Government Document Book