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frank a crowley

3 cilt bulundu.

Cilt sonuçları

PhosphatesPhosphate rockFrank A. Crowley

Frank A. Crowley · Montana Bureau of Mines and Geology

Sayfa sayısı yok · 1962

Phosphates

Niobium oresColumbium-rare-earth deposits, southern Ravalli County, MontanaFrank A. Crowley

Columbium-rare-earth deposits, southern Ravalli County, Montana

Frank A. Crowley · Montana School of Mines

47 sayfa · 1960

Rare earths / Niobium ores

Ore depositsMines and mineral deposits (except fuels) Sanders County, MontanaFrank A. Crowley

Mines and mineral deposits (except fuels) Sanders County, Montana

Frank A. Crowley · Montana School of Mines

58 sayfa · 1963

Mines and mineral resources / Ore deposits