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  1. By: Drucker, Philip, - American Museum of Natural History
    Publication info: Garden City, N.Y, Published for the American Museum of Natural History [by] the Natural History Press, 1963, c1955
    Holding Institution: American Museum of Natural History Library
  2. By: Drucker, Philip, - American Museum of Natural History
    Publication info: New York, Published for the American Museum of Natural History [by] McGraw-Hill, c1955
    Holding Institution: American Museum of Natural History Library
  1. By: Drucker, Philip,
    Type: Article
    In: Smithsonian miscellaneous collections
    Volume: 117
    Issue: 12
    Date: 1952-08-26
    Page Range: 1--7
    Publication Info: Washington Smithsonian Institution 1862-1972