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Arthur Barrette Parsons
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The porphyry coppers in 1956
Arthur Barrette Parsons · American Institute of Mining, Metallurgical, and Petroleum Engineers
270 sayfa · 1957
Copper mines and mining / Porphyry
The Porphyry coppers
Arthur Barrette Parsons · American Institute of Mining and Metallurgical Engineers, sponsored by the Rocky Mountain Fund
581 sayfa · 1933
Copper mines and mining / Porphyry