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  1. By: Lesley, J. P. (J. Peter), - Pennsylvania. Board of Commissioners for the Second Geological Survey.
    Publication info: Harrisburg, Board of Commissioners for the Geological Survey, 1889-90
    Holding Institution: Cornell University Library
  1. By: Lesley, J. P. (J. Peter), - Carter, Oscar C. S.
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 29
    Issue: 135
    Date: 1891
    Page Range: 43--49
    Publication Info: Philadelphia, American Philosophical Society,
  2. By: Lesley, J. P. (J. Peter),
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 14
    Issue: 92
    Date: 1874
    Page Range: 19--107
    Publication Info: Philadelphia, American Philosophical Society,
  3. By: Lesley, J. P. (J. Peter),
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 16
    Issue: 97
    Date: 1876
    Page Range: 61--179
    Publication Info: Philadelphia, American Philosophical Society,
  4. By: Lesley, J. P. (J. Peter),
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 20
    Issue: 113
    Date: 1883
    Page Range: 675--678
    Publication Info: Philadelphia, American Philosophical Society,
  5. By: Lesley, J. P. (J. Peter),
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 13
    Issue: 81
    Date: 1873
    Page Range: 3--21
    Publication Info: Philadelphia, American Philosophical Society,
  6. By: Lesley, J. P. (J. Peter),
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 21
    Issue: 115
    Date: 1884
    Page Range: 455--456
    Publication Info: Philadelphia, American Philosophical Society,
  7. By: Lesley, J. P. (J. Peter),
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 12
    Issue: 81
    Date: 1871
    Page Range: 125--138
    Publication Info: Philadelphia, American Philosophical Society,
  8. By: Lesley, J. P. (J. Peter),
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 20
    Issue: 113
    Date: 1883
    Page Range: 537--544
    Publication Info: Philadelphia, American Philosophical Society,
  9. By: Lesley, J. P. (J. Peter),
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 12
    Issue: 81
    Date: 1871
    Page Range: 139--158
    Publication Info: Philadelphia, American Philosophical Society,
  10. By: Lesley, J. P. (J. Peter),
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 18
    Issue: 102
    Date: 1878
    Page Range: 114--122
    Publication Info: Philadelphia, American Philosophical Society,
  11. By: Lesley, J. P. (J. Peter),
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 19
    Issue: 108
    Date: 1881
    Page Range: 409--418
    Publication Info: Philadelphia, American Philosophical Society,
  12. By: Lesley, J. P. (J. Peter),
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 29
    Issue: 135
    Date: 1891
    Page Range: 17--20
    Publication Info: Philadelphia, American Philosophical Society,
  13. By: Lesley, J. P. (J. Peter),
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 10
    Issue: 80
    Date: 1868
    Page Range: 543--582
    Publication Info: Philadelphia, American Philosophical Society,
  14. By: Lesley, J. P. (J. Peter),
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 28
    Issue: 132
    Date: 1890
    Page Range: 53--59
    Publication Info: Philadelphia, American Philosophical Society,
  15. By: Lesley, J. P. (J. Peter),
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 20
    Issue: 112
    Date: 1882
    Page Range: 519--522
    Publication Info: Philadelphia, American Philosophical Society,
  16. By: Lesley, J. P. (J. Peter),
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 23
    Issue: 122
    Date: 1886
    Page Range: 287--289
    Publication Info: Philadelphia, American Philosophical Society,
  17. By: Lesley, J. P. (J. Peter),
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 28
    Issue: 132
    Date: 1890
    Page Range: 65--70
    Publication Info: Philadelphia, American Philosophical Society,
  18. By: Lesley, J. P. (J. Peter),
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 18
    Issue: 105
    Date: 1880
    Page Range: 422--424
    Publication Info: Philadelphia, American Philosophical Society,
  19. By: Lesley, J. P. (J. Peter),
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 10
    Issue: 80
    Date: 1868
    Page Range: 481--510
    Publication Info: Philadelphia, American Philosophical Society,
  20. By: Lesley, J. P. (J. Peter),
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 17
    Issue: 100
    Date: 1877
    Page Range: 260--266
    Publication Info: Philadelphia, American Philosophical Society,
  21. By: Lesley, J. P. (J. Peter),
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 29
    Issue: 135
    Date: 1891
    Page Range: 20--25
    Publication Info: Philadelphia, American Philosophical Society,
  22. By: Lesley, J. P. (J. Peter),
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 29
    Issue: 135
    Date: 1891
    Page Range: 11--16
    Publication Info: Philadelphia, American Philosophical Society,
  23. By: Lesley, J. P. (J. Peter),
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 7
    Issue: 62
    Date: 1859
    Page Range: 129--155
    Publication Info: Philadelphia, American Philosophical Society,
  24. By: Lesley, J. P. (J. Peter),
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 9
    Issue: 68
    Date: 1862
    Page Range: 93--109
    Publication Info: Philadelphia, American Philosophical Society,
  25. By: Lesley, J. P. (J. Peter),
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 13
    Issue: 81
    Date: 1873
    Page Range: 156--168
    Publication Info: Philadelphia, American Philosophical Society,
  26. By: Lesley, J. P. (J. Peter),
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 13
    Issue: 81
    Date: 1873
    Page Range: 503--504
    Publication Info: Philadelphia, American Philosophical Society,