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21by Little, Elbert L. (Elbert Luther), 1907-2004“...U.S. Dept. of Agriculture,...”
Published 1950
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22
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23by Massey, C. L.“...U.S. Dept. of Agriculture, Forest Service,...”
Published 1981
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24Published 1996“...U.S. Dept. of Agriculture, Forest Service,...”
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25Published 2000“...Forest Service, U.S. Dept. of Agriculture,...”
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26Published 2002“...U.S. Dept. of Agriculture, Forest Service,...”
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27by Pearson, G. A. (Gustaf Adolph), 1880-“...U.S. Dept. of Agriculture, Forest Service :...”
Published 1950
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28
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29Published 2007“...U.S. Dept. of Agriculture, Forest Service,...”
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30Published 2007“...U.S. Dept. of Agriculture, Forest Service,...”
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31Published 2011“...U.S. Dept. of Agriculture, Forest Service,...”
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32Published 2011“...[U.S. Dept. of Agriculture, Forest Service],...”
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33by Merrill, Elmer D. (Elmer Drew), 1876-1956“...U.S. Dept. of Agriculture, Division of Agrostology,...”
Published 1901
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34by Little, Elbert L. (Elbert Luther), 1907-2004“...U.S. Dept. of Agriculture, Forest Service,...”
Published 1950
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35Published 2007“...U.S. Dept. of Agriculture, Forest Service,...”
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36
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37Published 1976“...U.S. Dept. of Agriculture, Soil Conservation Service,...”
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38by Richmond, Davie L.“...U.S. Dept. of Agriculture, Soil Conservation Service,...”
Published 1976
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39by Vogt, Kenneth D.“...U.S. Dept. of Agriculture, Soil Conservation Service,...”
Published 1980
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40by Barmore, Russel L.“...U.S. Dept. of Agriculture, Soil Conservation Service,...”
Published 1980
Government Document Book