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Bibliography, coal resources in Colorado
Coal resources in Colorado
Holt, Richard D.
Colorado Geological Survey.
1972
Colorado Geological Survey
Denver, Colo.
Includes indexes.
Coal mines and mining
Colorado
Bibliography
1 online resource (32 p.) : map.
eng
Bulletin (Colorado Geological Survey)
NR7.3/34-A/INTERNET
http://hdl.handle.net/10176/co:10920
795935335
2012-07-13T23:51:53.501Z