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