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| Plemons, Douglas (2006) The United States Saltpeter Cave Survey, 2006 : Journal of Spelean History, Vol.40,No.2, Issue 132 (July-December ,2007 |
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| Plemons, Douglas (2006) The United States Saltpeter Cave Survey, 2006 : Journal of Spelean History, Vol.40,No.2, Issue 132 (July-December ,2007 |
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| Plemons, Douglas (2006) The United States Saltpeter Cave Survey, 2006 : Journal of Spelean History, Vol.40,No.2, Issue 132 (July-December ,2007 |
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| Plemons, Douglas (2006) The United States Saltpeter Cave Survey, 2006 : Journal of Spelean History, Vol.40,No.2, Issue 132 (July-December ,2007 |
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| Plemons, Douglas (2006) The United States Saltpeter Cave Survey, 2006 : Journal of Spelean History, Vol.40,No.2, Issue 132 (July-December ,2007 |
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| Plemons, Douglas (2006) The United States Saltpeter Cave Survey, 2006 : Journal of Spelean History, Vol.40,No.2, Issue 132 (July-December ,2007 |
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| Plemons, Douglas (2006) The United States Saltpeter Cave Survey, 2006 : Journal of Spelean History, Vol.40,No.2, Issue 132 (July-December ,2007 |
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| Plemons, Douglas (2006) The United States Saltpeter Cave Survey, 2006 : Journal of Spelean History, Vol.40,No.2, Issue 132 (July-December ,2007 |
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| Plemons, Douglas (2006) The United States Saltpeter Cave Survey, 2006 : Journal of Spelean History, Vol.40,No.2, Issue 132 (July-December ,2007 |
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| Plemons, Douglas (2006) The United States Saltpeter Cave Survey, 2006 : Journal of Spelean History, Vol.40,No.2, Issue 132 (July-December ,2007 |
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| Plemons, Douglas (2006) The United States Saltpeter Cave Survey, 2006 : Journal of Spelean History, Vol.40,No.2, Issue 132 (July-December ,2007 |
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| The Encyclopedia of Arkansas History & Culture (http://encyclopediaofarkansas.net) |
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| Plemons, Douglas (2006) The United States Saltpeter Cave Survey, 2006 : Journal of Spelean History, Vol.40,No.2, Issue 132 (July-December ,2007 |
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| Plemons, Douglas (2006) The United States Saltpeter Cave Survey, 2006 : Journal of Spelean History, Vol.40,No.2, Issue 132 (July-December ,2007 |
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| Plemons, Douglas (2006) The United States Saltpeter Cave Survey, 2006 : Journal of Spelean History, Vol.40,No.2, Issue 132 (July-December ,2007 |
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| Plemons, Douglas (2006) The United States Saltpeter Cave Survey, 2006 : Journal of Spelean History, Vol.40,No.2, Issue 132 (July-December ,2007 |
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| Plemons, Douglas (2006) The United States Saltpeter Cave Survey, 2006 : Journal of Spelean History, Vol.40,No.2, Issue 132 (July-December ,2007 |
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| Plemons, Douglas (2006) The United States Saltpeter Cave Survey, 2006 : Journal of Spelean History, Vol.40,No.2, Issue 132 (July-December ,2007 |
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| Howard, J. Michael (2007) Bulletin Vol. 23, Mineral Species of Arkansas - A Digest (2nd ed.) Arkansas Geological Commission |
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| Plemons, Douglas (2006) The United States Saltpeter Cave Survey, 2006 : Journal of Spelean History, Vol.40,No.2, Issue 132 (July-December ,2007 |
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| Plemons, Douglas (2006) The United States Saltpeter Cave Survey, 2006 : Journal of Spelean History, Vol.40,No.2, Issue 132 (July-December ,2007 |
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| www.rkci.org (2008) http://www.rkci.org/library/gsp/engle.htm |
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| www.nashvillefossils.com/resources/pages/saltpeter.html |
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| www.nashevillefossils.com/resources/pages/saltpeter.html |
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| www.nashevillefossils.com/resources/pages/saltpeter.html |
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| www.nashevillefossils.com/resources/pages/saltpeter.html |
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| www.nashvillefossils.com/resources/pages/saltpeter.html |
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| www.nashevillefossils.com/resources/pages/saltpeter.html |
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| www.nashvillefossils.com/resources/pages/saltpeter.html |
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| www.nashvillefossils.com/resources/pages/saltpeter.html |
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| www.nashvillefossils.com/resources/pages/saltpeter.html |
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| www.nashvillefossils.com/resources/pages/saltpeter.html |
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| www.nashvillefossils.com/resources/pages/saltpeter.html |
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| www.nashvillefossils.com/resources/pages/saltpeter.html |
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| www.nashvillefossils.com/resources/pages/saltpeter.html |
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| www.nashvillefossils.com/resources/pages/saltpeter.html |
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| www.nashvillefossils.com/resources/pages/saltpeter.html |
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| www.nashvillefossils.com/resources/pages/saltpeter.html |
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| www.nashvillefossils.com/resources/pages/saltpeter.html |
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| www.nashvillefossils.com/resources/pages/saltpeter.html |
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| www.mtsuedu / ~ cwtech / saltpeter / Saltpeter. html |
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| Plemons,Douglas (2006) The United States Saltpeter Cave Survey,2006 : Journal of Spelean History,Vol.41,No.2,Issue 132(July-December,2007 |
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| Plemons,Douglas (2006) The United States Saltpeter Cave Survey,2006 : Journal of Spelean History,Vol.41,No.2,Issue 132(July-December,2007 |
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| Plemons,Douglas (2006) The United States Saltpeter Cave Survey,2006 : Journal of Spelean History,Vol.41,No.2,Issue 132(July-December,2007 |
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| Plemons,Douglas (2006) The United States Saltpeter Cave Survey,2006 : Journal of Spelean History,Vol.41,No.2,Issue 132(July-December,2007 |
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| www.mtsuedu / ~ cwtech / saltpeter / Saltpeter. html |
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| www.mtsuedu / ~ cwtech / saltpeter / Saltpeter. html |
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| www.mtsuedu / ~ cwtech / saltpeter / Saltpeter. html |
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| www.mtsuedu / ~ cwtech / saltpeter / Saltpeter. html |
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| www.mtsuedu / ~ cwtech / saltpeter / Saltpeter. html |
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| www.mtsuedu / ~ cwtech / saltpeter / Saltpeter. html |
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| Paris, Travis A. (2011) Tennessee Mineral Locality Index. Rocks & Minerals, 86 (4) 300-329 doi:10.1080/00357529.2010.517132 |
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| www.mtsuedu / ~ cwtech / saltpeter / Saltpeter. html |
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| Paris, Travis A. (2011) Tennessee Mineral Locality Index. Rocks & Minerals, 86 (4) 300-329 doi:10.1080/00357529.2010.517132 |
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| Paris, Travis A. (2011) Tennessee Mineral Locality Index. Rocks & Minerals, 86 (4) 300-329 doi:10.1080/00357529.2010.517132 |
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| www.mtsuedu / ~ cwtech / saltpeter / Saltpeter. html |
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| www.mtsuedu / ~ cwtech / saltpeter / Saltpeter. html |
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| www.mtsuedu / ~ cwtech / saltpeter / Saltpeter. html |
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| Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 302
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Searcy County, Arkansas, USA