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Drill Dust-collectors and Drilling Equipment with Integral Dust-collecting Systems Approved by the Bureau of Mines as of January 31, 1961
Floyd G. AndersonR. L. Evans
出版U.S. Department of the Interior, Bureau of Mines, 1961
URLhttp://books.google.com.hk/books?id=eUH0I_X3euQC&hl=&source=gbs_api
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