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  1. The effect of pruning in the training of young olive trees /
    By: Jacob, H. E.
    Publication info: Berkeley, Calif. :Agricultural Experiment Station,1934.
    Contributed by: University of California, Davis Libraries (archive.org)
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  2. Factors influencing the development of internal browning of the Yellow Newtown apple /
    By: Overholser, E. L. - Jacob, H. E. - Winkler, A. J.
    Publication info: Berkeley, Cal. :Agricultural Experiment Station,1923.
    Contributed by: University of California, Davis Libraries (archive.org)
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