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  1. America and the world's wood pile /
    By: Zon, Raphael, - Sparhawk, William N.
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1928.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
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  2. Research methods in the study of forest environment / by Carlos G. Bates and Raphael Zon.
    By: Bates, Carlos G. - Zon, Raphael,
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1922.
    Contributed by: NCSU Libraries (archive.org)
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  3. Timber growing and logging practice in the Lake states : measures necessary to keep forest land productive and to produce full timber crops /
    By: Zon, Raphael, - Greeley, W. B.
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1928.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
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