A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
How to distinguish the strata in which it may be found. (1900 w.)
How to distinguish the strata in which it may be found. (1900 w.)
Prospecting for coal in Colorado
Mines Min
Lakes, Arthur (author)
1899
Ill.
Article (Journal)
English
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Prospecting in San Juan Mountains, Colorado
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