Second International Conference and Exhibition on Trenchless Constructio n for Utilities, 14-16 Apbil 1987 conference proceedings - International Conference and Exhibition of Trenchless Construction for Utilities 1987 : London).; James, John E. (London: International Society for Trenchless Technology, 1987)
No-DIG 87.
Keywords: Tunelling -- Congresses; Underground utility lines -- Congresses