by James Bachelder Cathcart
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A summary of phosphate-rock resources of...
Economic geology of the Fort Meade quadr...
Mineralogy and chemistry of samples from...
Results of geologic exploration by core ...
Uranium in phosphate rock
Middle Paleozoic sedimentary phosphate i...
Géologie des phosphates sédimentaires
Green barley essence
Analytical and stratigraphic data on the...
Sulfur and carbon isotopes in phosphorit...
Phosphate rock