Showing 1 - 5 results of 5 for search 'Robertson, Ralph D. (Ralph Denny), 1885-1919', query time: 0.04s Refine Results
  1. 1
    Irrigation of rice in California /

    Irrigation of rice in California / by Robertson, Ralph D. (Ralph Denny), 1885-1919

    Published 1917
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  2. 2
    Irrigation and soil conditions in the Sierra Nevada foothills, California /

    Irrigation and soil conditions in the Sierra Nevada foothills, California / by Robertson, Ralph D. (Ralph Denny), 1885-1919

    Published 1915
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  3. 3
    The economical irrigation of alfalfa in Sacramento Valley /

    The economical irrigation of alfalfa in Sacramento Valley / by Beckett, S. H. (Samuel Hume), 1883-1937

    Published 1917
    Other Authors: “…Robertson, Ralph D. (Ralph Denny), 1885-1919…”
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  4. 4
    Irrigation from reservoirs in western Kansas and Oklahoma. Letter from the Secretary of the Agriculture transmitting, pursuant to law, a report on irrigation from reservoirs in western Kansas and Oklahoma prepared under supervision of Dr. Samuel Fortier. January 21, 1913. -- Referred to the Committee on Irrigation and ordered to be printed, with illustrations.

    Irrigation from reservoirs in western Kansas and Oklahoma. Letter from the Secretary of the Agriculture transmitting, pursuant to law, a report on irrigation from reservoirs in wes...

    Published 1913
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  5. 5
    Report of the Conservation commission of the state of California. : January 1, 1913 /

    Report of the Conservation commission of the state of California. : January 1, 1913 /

    Published 1912
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