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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Lefevre, George,
    Publication info: Boston, Ginn & company, 1898
    Holding Institution: The Johns Hopkins University Sheridan Libraries
    Subjects: Perophora  Reproduction, Asexual  
  2. By: Root, Francis Metcalf,
    Publication info: Baltimore, 1917
    Holding Institution: The Johns Hopkins University Sheridan Libraries
    Subjects: Heredity  Reproduction, Asexual