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An evaluation of the western phosphate industry and its resources (in five parts).
Computing reserves of mineral deposits:principles and conventional methods
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Published Year
1960-1969 (2) *
Subject
Mines and mineral resources (1)
Phosphate mines and mining--Montana (1)
Phosphate rock--Montana (1)
Author
Popoff, Constantine C. (2) *
Service, Alfred L. (1)