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  1. By: Leach, Glen Clifton, - Borodin, N. A.
    Publication info: Washington,Govt. print. off.,1920.
    Holding Institution: Library of Congress
  2. By: Borodin, N. A.
    Publication info: Cambridge, U.S.A. :Printed for the Museum,1929.
    Holding Institution: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library