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Lightweight fiberglass feed leg for hand-held pneumatic percussion rock drills /

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Bibliographic Details
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
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Description
Physical Description:6 p. : ill. ; 28 cm.