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  1. 1
    Preliminary report on the insect enemies of forests in the Northwest : an account of the results gained from a reconnaissance trip made in the spring and early summer of 1899 /

    Preliminary report on the insect enemies of forests in the Northwest : an account of the results gained from a reconnaissance trip made in the spring and early summer of 1899 / by Hopkins, A. D. (Andrew Delmar), 1857-1948

    Published 1899
    “…U.S. Dept. of Agriculture, Division of Entomology,…”
    Government Document Book
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  2. 2
    Report on codling-moth investigations in the northwest during 1901 /

    Report on codling-moth investigations in the northwest during 1901 / by Simpson, C. B. (Charles Baird), 1877-1907

    Published 1902
    “…U.S. Dept. of Agriculture, Division of Entomology,…”
    Government Document Book
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