000
002870000a22000970004500
245
_a
Rock engineering and excavation in an urban environment : proceedings of ...
260
_a
London
_b
The Institution of Mining & Metollurgy
_c
1986
080
_a
624.12
_b
R6
041
_a
EN
942
_c
BK
999
_c
119428
_d
119428