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  1. Fertilizers and covercrops for California deciduous orchards /
    By: Proebsting, Edward L.
    Publication info: Berkeley, Calif. :University of California, College of Agriculture, Agricultural Experiment Station,1943.
    Contributed by: University of California, Davis Libraries (archive.org)
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  2. Fertilizers and covercrops for California orchards /
    By: Proebsting, Edward L.
    Publication info: [Berkeley, Calif.] :Division of Agricultural Sciences, University of California,1958.
    Contributed by: University of California, Davis Libraries (archive.org)
    View Book