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Diesel engines underground.
Diesel engines underground.
Diesel engines underground.
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Published Year
1940-1949 (3)
Subject
Diesel motor exhaust gas (3) *
Mining machinery (3)
Author
Berger, L. B. (3)
Elliott, M. A. (3)
Holtz, John C. (3) *
Schrenk, H. H. (3)
