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By "Hill, Robert Roy, 1885-"
Books/Journals (1)
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Effects of grazing upon western yellow-pine reproduction in the national forests of Arizona and New Mexico
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By: Hill, Robert Roy,
Edition:
Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1917
Volume: no.580 (1917)
Series:
Holding Institution: U.S. Department of Agriculture, National Agricultural Library
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