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  1. By: La Rocque, Aurèle, - Marple, Mildred Fisher. - Ohio. Division of Geological Survey.
    Publication info: Columbus, Ohio Dept. of Natural Resources, Division of Geological Survey, 1955
    Holding Institution: University of Connecticut Libraries
  1. By: La Rocque, Aurèle,
    Type: Article
    In: The Canadian field-naturalist
    Volume: 70
    Issue: 4
    Date: 1956
    Page Range: 187--187
    Publication Info: Ottawa Ottawa Field-Naturalists' Club