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Illustrated account of tunnel work in progress in mining districts and for drainage. (3500 w.) (No. 9997)
Illustrated account of tunnel work in progress in mining districts and for drainage. (3500 w.) (No. 9997)
Tunnel driving in Colorado
Min Sci Pr
Bain, Foster H. (Autor:in)
1909
Aufsatz (Zeitschrift)
Englisch
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Colorado Tunnel Ventilation Study
NTIS | 1972
|Engineering Index Backfile | 1906
|Colorado Tunnel Ventilation Study
NTIS | 1973
|Engineering Index Backfile | 1945
|Tunnel construction -- Colorado River aqueduct
Engineering Index Backfile | 1934
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