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  1. By: Marx, George,
    Publication info: Washington, Govt. Print. Off, 1890
    Holding Institution: Smithsonian Libraries and Archives
  2. By: Keyserling, Eugen, - Hess, Gg., - Jacob, Emil Theodor Jakob, - Marx, George,
    Publication info: Nürnberg, Verlag von Bauer & Raspe (E. Küster), 1880-1893
    Holding Institution: Smithsonian Libraries and Archives
  3. By: Keyserling, Eugen, - Marx, George,
    Publication info: Nürnberg, Verlag von Bauer & Raspe (E. Kuster), 1880-[1893]
    Holding Institution: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library