by Sandra H. B. Clark
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Barite nodules in Devonian shale and mud...
A preliminary report on the geology of t...
Geochemical and geological reconnaissanc...
The McHugh Complex of South-Central Alas...
The role of mineral resource assessments...
Geology and mineral resource potential o...
Materials survey
Oxidized zinc deposits of the United Sta...
Carbonate-hosted lead-zinc deposits
The lead and zinc bearing rocks of centr...
Sediment-hosted lead-zinc sulphide depos...
Carbonate-hosted lead-zinc deposits of w...