B-25 Oil Shales of Colorado

Oil shales of Colorado. 78 pages. 2 plates (1:84,500). 10 figures. R. D. George. Digital PDF download. B-25D

Author: George, R. D. “Bulletin 25 - Oil Shales of Colorado.” Oil Shale. Bulletin. Boulder, CO: Colorado Geological Survey, 1921.
Status: Digital
Year: 1921

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