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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Romer, Alfred Sherwood, - Olson, E C
    Type: Article
    In: Breviora
    Volume: 30
    Date: 1954
    Page Range: 1--8
    Publication Info: Cambridge, Mass Museum of Comparative Zoology, Harvard University [1952-
  2. By: Olson, E C
    Type: Article
    In: Annals of the South African Museum. Annale van die Suid-Afrikaanse Museum
    Volume: 64
    Date: 1974
    Page Range: 27--46
    Publication Info: Cape Town, South African Museum, 1898-2004