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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Hood, D. W. (Donald Wilbur), - Calder, John A. - United States. Office of Marine Pollution Assessment. - United States. Bureau of Land Management.
    Publication info: [Rockville, Md.?], U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, Office of Marine Pollution Assessment, 1981
    Holding Institution: Penn State University
  1. By: Calder, John A.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 73
    Issue: 1
    Date: 1959
    Page Range: 57--57
    Publication Info: Ottawa Ottawa Field-Naturalists' Club