![DISCUSSION. THE BENTONITE TUNNELLING MACHINE.]()
DISCUSSION. THE BENTONITE TUNNELLING MACHINE.BARTLETT, JV; COOMBES, TA; MUIR WOOD, AM; BRAUN, WM; LARKIN, KF; BIGGART, AR; CUTHBERT, EW; LEWIS, RP; BURGESS, RP; BUCHANAN, J; TRIGGS, RL; BODEN, B; PIRRIES, ND; OREILLY, MP · Proceedings of the Institution of Civil Engineers · 1974