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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Machado-Allison, C E
    Type: Article
    In: Proceedings of the Biological Society of Washington
    Volume: 80
    Date: 1967
    Page Range: 223--226
    Publication Info: Washington, Biological Society of Washington,
  2. By: Machado-Allison, C E - Barrera Marín, Alfredo,
    Type: Article
    In: Brigham Young University science bulletin
    Volume: 17
    Date: 1972
    Page Range: 1--14
    Publication Info: Provo, Utah, Brigham Young University, [1955-1976]