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  1. By: Wingate, Harold,
    Type: Article
    In: Proceedings of the Academy of Natural Sciences of Philadelphia
    Volume: 41
    Date: 1889
    Page Range: 156--158
    Publication Info: Philadelphia, Academy of Natural Sciences of Philadelphia,
  2. By: Wingate, Harold,
    Type: Article
    In: Proceedings of the Academy of Natural Sciences of Philadelphia
    Volume: 41
    Issue: 2
    Date: 1889
    Page Range: 280--281
    Publication Info: Philadelphia, Academy of Natural Sciences of Philadelphia,
  3. By: Wingate, Harold,
    Type: Article
    In: Proceedings of the Academy of Natural Sciences of Philadelphia
    Volume: 41
    Date: 1889
    Page Range: 188--189
    Publication Info: Philadelphia, Academy of Natural Sciences of Philadelphia,