Showing 1 - 5 results of 5 for search 'Hall, Ralph C. (Ralph Corbin), 1899-', query time: 0.03s Refine Results
  1. 1
    Insect damage to the 1954 crop of Douglas-fir and sugar pine cones and seeds in northern California /

    Insect damage to the 1954 crop of Douglas-fir and sugar pine cones and seeds in northern California / by Hall, Ralph C. (Ralph Corbin), 1899-

    Published 1955
    Government Document Book
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  2. 2
    Sagebrush defoliator outbreak in Northern California /

    Sagebrush defoliator outbreak in Northern California / by Hall, Ralph C. (Ralph Corbin), 1899-

    Published 1965
    Government Document Book
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  3. 3
    Control of the locust borer /

    Control of the locust borer / by Hall, Ralph C. (Ralph Corbin), 1899-

    Published 1942
    Government Document Book
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  4. 4
    The California five-spined engraver : its biology and control /

    The California five-spined engraver : its biology and control / by Struble, George R., 1904-

    Published 1955
    Other Authors: “…Hall, Ralph C. (Ralph Corbin), 1899-…”
    Government Document Book
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  5. 5
    Weather and tree growth associated with white fir mortality caused by fir engraver and roundheaded fir borer /

    Weather and tree growth associated with white fir mortality caused by fir engraver and roundheaded fir borer / by Ferrell, George T.

    Published 1975
    Other Authors: “…Hall, Ralph C. (Ralph Corbin), 1899-…”
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