West, G. (1980). Geophysical and television borehole logging for probing ahead of tunnels. Transport and Road Research Laboratory.
Chicago-viite (17. p.)West, G. Geophysical and Television Borehole Logging for Probing Ahead of Tunnels. Crowthorne, Berk: Transport and Road Research Laboratory, 1980.
MLA-viite (9. p.)West, G. Geophysical and Television Borehole Logging for Probing Ahead of Tunnels. Transport and Road Research Laboratory, 1980.
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