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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Halpern, J A
    Type: Article
    In: Proceedings of the Biological Society of Washington
    Volume: 81
    Date: 1968
    Page Range: 231--239
    Publication Info: Washington, Biological Society of Washington,
  2. By: Halpern, J A
    Type: Article
    In: Proceedings of the Biological Society of Washington
    Volume: 82
    Date: 1969
    Page Range: 129--142
    Publication Info: Washington, Biological Society of Washington,
  3. By: Halpern, J A
    Type: Article
    In: Proceedings of the Biological Society of Washington
    Volume: 82
    Date: 1969
    Page Range: 503--506
    Publication Info: Washington, Biological Society of Washington,
  4. By: Halpern, J A
    Type: Article
    In: Proceedings of the Biological Society of Washington
    Volume: 83
    Date: 1970
    Page Range: 1--12
    Publication Info: Washington, Biological Society of Washington,
  5. By: Halpern, J A
    Type: Article
    In: Proceedings of the Biological Society of Washington
    Volume: 85
    Date: 1972
    Page Range: 359--383
    Publication Info: Washington, Biological Society of Washington,