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  1. By: Williams, Ernest E. (Ernest Edward) - Koopman, Karl F. - Thorp, James.
    Publication info: New York American Museum of Natural History [1951]
    Holding Institution: American Museum of Natural History Library
  2. By: Koopman, Karl F. - Thorp, James. - Williams, Ernest E. (Ernest Edward)
    Publication info: 1951
    Holding Institution: American Museum of Natural History Library