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  1. By: Szalay, Frederick S. - Wilson, Robert W. (Robert Warren),
    Publication info: 1972
    Holding Institution: American Museum of Natural History Library
  2. By: Wilson, Robert W. (Robert Warren), - Szalay, Frederick S.
    Publication info: New York, N.Y, American Museum of Natural History, [1972]
    Holding Institution: American Museum of Natural History Library
  1. By: Wilson, Robert W. (Robert Warren),
    Type: Article
    In: The University of Kansas science bulletin
    Volume: 42
    Issue: 14
    Date: 1962-06-28
    Page Range: 157--178
    Publication Info: [Lawrence], University of Kansas, [1926-1996]