Engineering classification of rock masses for the design of tunnel support
1974 ◽
Vol 6
(4)
◽
pp. 189-236
◽
1975 ◽
Vol 12
(5-6)
◽
pp. 77
1974 ◽
Vol 11
(12)
◽
pp. 244
◽
2004 ◽
Vol 15
(1)
◽
pp. 139-162
1985 ◽
Vol 22
(3)
◽
pp. A81
Keyword(s):