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Noise Reduction of a Pneumatic Rock Drill

Aarne VisnapuuJ. W. Jensen

出版	U.S. Department of the Interior, Bureau of Mines, 1975
URL	http://books.google.com.hk/books?id=i9dXa9rjwt4C&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN