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	1.	A preliminary report on the geology of the Monarch mining district, Chaffee County, Colorado, by R. D. Crawford. by Crawford, R. D. (Ralph Dixon), 1873- Material type: Text; Format: print ; Literary form: Not fiction Publication details: [Denver, Colo., The Smith-Brooks printing company, state printers , 1910] Availability: No items available. Add to cart (remove)
	2.	Geology and ore deposits of the Monarch and Tomichi districts, Colorado, by R. D. Crawford. by Crawford, R. D. (Ralph Dixon), 1873- Material type: Text; Format: print ; Literary form: Not fiction Publication details: [Denver, Col., The Smith-Brooks printing co., 1913] Availability: No items available. Add to cart (remove)
	3.	Geology and ore deposits of the Gold brick district, Colorado, by R. D. Crawford and P. G. Worcester. by Crawford, R. D. (Ralph Dixon), 1873- Worcester, Philip G. (Philip George), 1884- [joint author.] Material type: Text; Format: print ; Literary form: Not fiction Publication details: Denver, Colo., Eames bros., state printers, 1916 Availability: No items available. Add to cart (remove)
	4.	Some anticlines of Routt county, Colorado, by R. D. Crawford, K. M. Willson and V. C. Perini. by Colorado Geological Survey Crawford, R. D. (Ralph Dixon), 1873- Willson, K. M Perini, Vincent Charles Series: Colorado. Geological survey. Bulletin 23 Material type: Text; Format: print ; Literary form: Not fiction Publication details: Denver, Col., Eames bros., state printers, 1920 Availability: No items available. Add to cart (remove)
	5.	Geology and ore deposits of the Red Cliff district, Colorado, by R. D. Crawford and Russell Gibson. by Crawford, R. D. (Ralph Dixon), 1873- Gibson, Russell, 1887- Material type: Text; Format: print ; Literary form: Not fiction Publication details: Boulder, Col., Camera print, 1925 Availability: No items available. Add to cart (remove)

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