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Ore ControlBy F. M. Leonard
Churn-drill hole sludge samples have proved their reliability at Cananea
Jan 5, 1951
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ContentsJan 1, 1930
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Institute of Representatives on Boards (83b19c23-5a98-4bb7-af51-3935d50431ff)? United Engineering Society ? Engineering Societies Library Board ? Engineering Foundation Board Other Committees
Jan 1, 1928
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Proceedings of the Council for the Year 1911Jan 1, 1913