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  1. Handbook of medical entomology [by] Wm. A. Riley ... and O. A. Johannsen ...
    By: Riley, William Albert, - Johannsen, Oskar Augustus, - Metcalf Collection (North Carolina State University).
    Publication info: Ithaca, N.Y.,The Comstock publishing company,1915.
    Contributed by: NCSU Libraries (archive.org)
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  2. Handbook of medical entomology [by] Wm. A. Riley ... and O. A. Johannsen.
    By: Riley, William Albert, - Johannsen, O. A.
    Publication info: Ithaca, N. Y.,The Comstock publishing company,1915.
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Institution Libraries
    View Book