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Conditions in the feldspar industry
Feldspar
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Published Year
1920-1929 (1)
1930-1939 (1)
Subject
Feldspar industry (2) *
Feldspar mines and mining (2)
Feldspar (1)
Mining machinery (1)
Author
Bowles, Oliver. (1)
Ladoo, Raymond B. (1)
Lee, C. V. (1)
