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  1. By: Erdl, Michael Pius
    Type: Article
    In: Archiv für Naturgeschichte
    Volume: 8
    Issue: 1
    Date: 1842
    Page Range: 45--60
    Publication Info: Berlin, Nicolai, 1835-
  2. By: Erdl, Michael Pius
    Type: Article
    In: Archiv für Naturgeschichte
    Volume: 9
    Issue: 1
    Date: 1843
    Page Range: 162--167
    Publication Info: Berlin, Nicolai, 1835-