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  1. By: Snook, Harry James, - Long, Joseph Abraham,
    Publication info: Berkeley, University of California press, 1914
    Holding Institution: University of California Libraries
    Subjects: Salamanders  Spermatogenesis in animals  
  2. By: Guyer, Michael F. (Michael Frederic),
    Publication info: Chicago, [s.n.], 1900
    Holding Institution: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
    Subjects: Spermatogenesis in animals  
  3. By: Selenka, Emil, - Hubrecht, A. A. W. (Ambrosius Arnold Willem), - Selenka, Emil, - Hubrecht, A. A. W. (Ambrosius Arnold Willem),
    Publication info: Wiesbaden, Kreidel, 1883-1913
    Holding Institution: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
    Subjects: Embryology  Mammals  Spermatogenesis in animals  
  4. By: Auerbach, Leopold.
    Publication info: Jena, Fischer, 1896
    Holding Institution: Smithsonian Libraries and Archives
    Subjects: Gasterpoda  Snails  Spermatogenesis in animals