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  1. By: Cockerell, Theodore D. A. (Theodore Dru Alison), - Piel, Octave.
    Publication info: New York City, The American Museum of Natural History, [1931]
    Holding Institution: American Museum of Natural History Library
  2. By: Cockerell, Theodore D. A. (Theodore Dru Alison), - Piel, Octave.
    Publication info: 1931
    Holding Institution: American Museum of Natural History Library