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	1.	Economic geology of the Beaver Quadrangle, Pennsylvania (southern Beaver and northwestern Allegheny counties) by Lester H. Woolsey. by Woolsey, Lester Hood, 1877- Material type: Text; Format: print ; Literary form: Not fiction Publication details: Washington : Govt. print. off., 1906 Availability: No items available. Add to cart (remove)
	2.	The Bull mountain coal field, Musselshell and Yellowstone counties, Montana, by L. H. Woolsey, R. W. Richards and C. T. Lupton, comp. and ed. by E. Russell Lloyd. by Woolsey, Lester Hood, 1877- Richards, Ralph Webster, 1879- [joint author.] Lupton, Charles T [joint author.] Lloyd, Edwin Russell, 1882- [ed.] Material type: Text; Format: print ; Literary form: Not fiction Publication details: Washington, Govt. Print. Off., 1917 Availability: No items available. Add to cart (remove)

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