000
00261nam a2200121 a 4500
003
EIA
001
1821
942
_0
2
_2
ddc
_c
BK
245
_a
Economics of mineral engineering
260
_c
1976
008
141112s1976 ck r 000 u spa d
082
_a
622
_b
I61
999
_c
3920
_d
3920