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1.- A symposium on the geology of fluorspar: proceedings of the ninth Forum on Geology of Industrial Minerals: April 26-28, 1973, Paducah, Kentucky
Congreso - Forum on Geology of Industrial Minerals (9. 1973. Paducah, Kentucky); Hutcheson, D.W., ed.
Lexington [Kentucky]: University of Kentucky, 1974
Kentucky Geological Survey. Special Publication
Peñarroya M/2-8.8
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