Lightweight fiberglass feed leg for hand-held pneumatic percussion rock drills /
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Main Author: | Spencer, Ellsworth R. |
---|---|
Format: | Book |
Language: | English |
Published: |
Pittsburgh, Pa. :
U.S. Dept. of the Interior, Bureau of Mines,
1985.
|
Series: | Information circular (United States. Bureau of Mines) ;
9047 |
Subjects: | |
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