000
002520000a22001090004500
041
_a
EN
080
_a
622(058)
_b
M5
100
_a
Spooner, J., ed.
245
_a
Mining annual review : 1979
260
_a
London
_b
Mining Journal Books
_c
1979
942
_c
BK
999
_c
114152
_d
114152