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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Perkins, C. B. (Clarence Basil),
    Edition: 2d ed.
    Publication info: San Diego, Calif, Zoological Society of San Diego, 1949
    Holding Institution: San Diego Zoo Global Library & Archives
    BHL Collections: Expanding Access to Biodiversity Literature
  2. By: Perkins, C. B. (Clarence Basil),
    Publication info: San Diego, Calif, 1940
    Holding Institution: San Diego Zoo Global Library & Archives
    BHL Collections: Expanding Access to Biodiversity Literature
  3. By: Perkins, C. B. (Clarence Basil),
    Edition: 2nd ed.
    Publication info: San Diego, Calif, Zoological Society of San Diego, 1949
    Holding Institution: San Diego Zoo Global Library & Archives
    BHL Collections: Expanding Access to Biodiversity Literature
  4. By: Perkins, C. B. (Clarence Basil),
    Publication info: San Diego, Calif, Zoological Society of San Diego, 1938
    Holding Institution: San Diego Zoo Global Library & Archives
    BHL Collections: Expanding Access to Biodiversity Literature