Tunnelling' 88 : International symposium. V. London, 1988, 18 - 21 April. London: The Institution of Mining and Mettallurgy, 1988 437 p. 1-870706-01-3.
Tunnelling' 88 : International symposium. V. London, 1988, 18 - 21 April. London: The Institution of Mining and Mettallurgy, 1988 437 p. 1-870706-01-3.
(1988) Tunnelling' 88 : International symposium. V. London, 1988, 18 - 21 April, London: The Institution of Mining and Mettallurgy 437 p. 1-870706-01-3.
(1988). Tunnelling' 88 : International symposium. V. London, 1988, 18 - 21 April. Proceedings of.... London: The Institution of Mining and Mettallurgy, 437 p.
Tunnelling' 88 : International symposium. V. London, 1988, 18 - 21 April: Proceedings of.... London: The Institution of Mining and Mettallurgy; 1988. p. 437 p. ISBN: 1-870706-01-3.
