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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 /
Published 1899“…U.S. Dept. of Agriculture, Division of Entomology,…”
Government Document Book -
2
Report on codling-moth investigations in the northwest during 1901 /
Published 1902“…U.S. Dept. of Agriculture, Division of Entomology,…”
Government Document Book