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1by Earnshaw, Frank L., Grimes, Frank G., United States. Dept. of Agriculture., United States. Bureau of Biological Survey.“...United States. Department of Agriculture....”
Published 1929
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2by Ashbrook, F. G. (Frank Getz), 1892-, Earnshaw, Frank L., United States. Bureau of Biological Survey., United States. Dept. of Agriculture.“...United States. Department of Agriculture....”
Published 1925
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3by Speelman, S. R. (Sanford Reed), 1894-, Williams, J. O. (John Oscar), 1885-, United States. Dept. of Agriculture.“...United States. Department of Agriculture....”
Published 1938
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4by Derguy, María Rosa, Frangi, Jorge Luis, Drozd, Andrea Alejandra, Arturi, Marcelo Fabián, Martinuzzi, Sebastián“...United States Department of Agriculture...”
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5by Drucker, Lesley M.“...United States Department of Agriculture, Soil Conservation Service...”
Published 1994
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Text -
6“...United States Department of Agriculture, Forest Service, Rocky Mountain Research Station...”
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Other/Unknown Material