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  1. Ammonification and nitrification in Hawaiian soils /
    By: Kelley, W. P.
    Publication info: Washington, D.C. :Government Printing Office,1915.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
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  2. The effects of alkali on citrus trees /
    By: Kelley, W. P. - Thomas, Edward Ellis,
    Publication info: Berkeley, Cal. :Agricultural Experiment Station,1920.
    Contributed by: University of California, Davis Libraries (archive.org)
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  3. The effects of alkali on citrus trees / by W.P. Kelley and E.E. Thomas.
    By: Kelley, W. P. - Thomas, Edward E.
    Publication info: Berkeley, Cal. :Agricultural Experiment Station,1920.
    Contributed by: University of California Libraries (archive.org)
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  4. The effects of calcium and magnesium carbonates on some biological transformations of nitrogen in soils,
    By: Kelley, W. P.
    Publication info: Berkeley,University of California Press[1912]
    Contributed by: University of California, Davis Libraries (archive.org)
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