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Relative efficiency of roots and tops of plants in protecting the soil from erosionKramer, Joseph, Weaver, John E. January 1936 (has links)
Thesis (Ph. D.)--University of Nebraska, 1937. / "Literature cited": p. 62-63. "Reprinted from part of Bulletin 12, Conservation department of the Conservation and survey division, the University of Nebraska" with Joseph Kramer and J.E. Weaver given as authors.
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