TY - BOOK ED - The Institution of Mining and Metallurgy TI - Tunnelling '79: proceedings of the second international symposium, organized by the Institution of Mining and Metallurgy, with the cooperation of the British Tunnelling Society and the Transport and Road Research Laboratory, held in London from 12 to 16 March, 1979 SN - 01433911 AV - TA 800 .T789 1979 PY - 1979/// CY - The Institution of Ming and Metallurgy PB - London KW - Tunnelling N1 - Includes bibliographical references and index ER -