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  1. By: Koenig, George Augustus,
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 14
    Issue: 93
    Date: 1874
    Page Range: 218--223
    Publication Info: Philadelphia, American Philosophical Society,
  2. By: Koenig, George Augustus,
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 16
    Issue: 99
    Date: 1877
    Page Range: 509--518
    Publication Info: Philadelphia, American Philosophical Society,
  3. By: Koenig, George Augustus,
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 18
    Issue: 102
    Date: 1878
    Page Range: 29--34
    Publication Info: Philadelphia, American Philosophical Society,
  4. By: Koenig, George Augustus,
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 19
    Issue: 109
    Date: 1881
    Page Range: 472--477
    Publication Info: Philadelphia, American Philosophical Society,
  5. By: Koenig, George Augustus,
    Type: Article
    In: Proceedings of the Academy of Natural Sciences of Philadelphia
    Volume: 38
    Date: 1886
    Page Range: 350--351
    Publication Info: Philadelphia, Academy of Natural Sciences of Philadelphia,
  6. By: Koenig, George Augustus,
    Type: Article
    In: Proceedings of the Academy of Natural Sciences of Philadelphia
    Volume: 28
    Date: 1876
    Page Range: 82--83
    Publication Info: Philadelphia, Academy of Natural Sciences of Philadelphia,
  7. By: Koenig, George Augustus,
    Type: Article
    In: Proceedings of the Academy of Natural Sciences of Philadelphia
    Volume: 30
    Date: 1878
    Page Range: 405--406
    Publication Info: Philadelphia, Academy of Natural Sciences of Philadelphia,
  8. By: Koenig, George Augustus,
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 22
    Issue: 118
    Date: 1885
    Page Range: 211--213
    Publication Info: Philadelphia, American Philosophical Society,
  9. By: Koenig, George Augustus,
    Type: Article
    In: Proceedings of the Academy of Natural Sciences of Philadelphia
    Volume: 34
    Date: 1882
    Page Range: 15--16
    Publication Info: Philadelphia, Academy of Natural Sciences of Philadelphia,
  10. By: Koenig, George Augustus,
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 42
    Issue: 173
    Date: 1903
    Page Range: 219--237
    Publication Info: Philadelphia, American Philosophical Society,
  11. By: Koenig, George Augustus,
    Type: Article
    In: Proceedings of the Academy of Natural Sciences of Philadelphia
    Volume: 29
    Date: 1877
    Page Range: 198--199
    Publication Info: Philadelphia, Academy of Natural Sciences of Philadelphia,
  12. By: Koenig, George Augustus,
    Type: Article
    In: Proceedings of the Academy of Natural Sciences of Philadelphia
    Volume: 34
    Date: 1882
    Page Range: 103--104
    Publication Info: Philadelphia, Academy of Natural Sciences of Philadelphia,