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  1. Development and activities of roots of crop plants; a study in crop ecology,
    By: Weaver, John E. - Crist, John W., - Jean, Frank Covert,
    Publication info: Washington,Carnegie Institution of Washington,1922.
    Contributed by: Library of Congress
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  2. The ecological relations of roots,
    By: Weaver, John E.
    Publication info: Washington,Carnegie institution of Washington,1919.
    Contributed by: Library of Congress
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  3. A study of the vegetation of southeastern Washington and adjacent Idaho ...
    By: Weaver, John E.
    Publication info: Lincoln, Neb.[1917]
    Contributed by: University of California Libraries (archive.org)
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