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  1. Illustrations of the Zygænidæ & Bombycidæ of North America, by Richard H. Stretch. vol. I. Part 1 to 9. July 1872 to Dec. 1873.
    By: Stretch, Richard Harper.
    Publication info: San Francisco,1873
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
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