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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Foster, Richard W.
    Type: Article
    In: Johnsonia
    Volume: 2
    Issue: 21
    Date: 1946
    Page Range: 37--40
    Publication Info: Cambridge, Mass, Dept. of Mollusks, Museum of Comparative Zoölogy, Harvard University, 1941-
  2. By: Foster, Richard W.
    Type: Article
    In: Johnsonia
    Volume: 2
    Issue: 20
    Date: 1946
    Page Range: 29--36
    Publication Info: Cambridge, Mass, Dept. of Mollusks, Museum of Comparative Zoölogy, Harvard University, 1941-