Micro- and small-diameter tunneling / U.S. National Committee on Tunneling Technology, Geotechnical Board, Commission on Engineering and Technical Systems.
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Description based on online resource; title from PDF cover page (ebrary, viewed September 7, 2015).
Electronic reproduction. Ann Arbor, MI : ProQuest, 2015. Available via World Wide Web. Access may be limited to ProQuest affiliated libraries.
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