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	1.	A thick coal bed near Lake De Smet, Johnson County, Wyoming, by William J. Mapel, James M. Schopf, and James R. Gill. by Mapel, W. J. (William Jameson), 1922- Series: Geological Survey circular ; 228 \| Geological Survey (U.S.). Circular ; 228. Material type: Text; Format: print ; Literary form: Not fiction Publication details: Washington, 1953 Availability: No items available. Add to cart (remove)
	2.	Stratigraphy and structure of the northern and western flanks of the Black Hills uplift, Wyoming, Montana and South Dakota, by Charles S. Robinson, William J. Mapel and Maximilian H. Bergendahl. by Robinson, Charles Sherwood, 1920- Mapel, W. J. (William Jameson), 1922- [joint author.] Bergendahl, M. H. (Maximilian Hilmar), 1921- [joint author.] Material type: Text; Format: print ; Literary form: Not fiction Publication details: Washington, U.S. Govt. Print. Off., 1964 Availability: No items available. Add to cart (remove)

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