Essex, England Elsevier Applied Science for the Institution of Mining and Metallurgy. 1991. Tunneling - Congresses., Tunneling - Congresses, tunnelling, IMM, Bibliography, Conference publication, Illustrated 31 cm. ix, 513 pages : illustrations. Encuadernación en tapa dura de editorial ilustrada. Idioma Inglés. Papers presented at the sixth international symposium, Tunnelling 91, organized by the Institution of Mining and Metallurgy, with the cooperation of the British Tunnelling Society, the International Tunnelling Association and the Transport and Road Research Laboratory, Department of Transport, and held in London, England, 14-18 April 1991. . Includes bibliographical references. Online version:: Tunnelling 91. London ; New York ; Published for the Institution of Mining and Metallurgy by Elsevier Applied Science, ©1991 Local: (OCoLC)551548785 . ISBN: 1851666249; 9781851666249