INTERNATIONAL SYMPOSIUM MICROTUNNELLING (2nd : 1992 : Munich)
Microtunnelling - Rotterdam A.A. Balkema 1992 - x, 89p. : ill., photos
9054100729
TUNNELS AND TUNNELING-CONSTRUCTION
SEWERS-TUNNELS
624.19 / I6
Microtunnelling - Rotterdam A.A. Balkema 1992 - x, 89p. : ill., photos
9054100729
TUNNELS AND TUNNELING-CONSTRUCTION
SEWERS-TUNNELS
624.19 / I6