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	1.	Geology and water resources of the San Luis valley, Colorado, by C.E. Siebenthal. by Siebenthal, C. E. (Claude Ellsworth), 1869-1930 Series: Water-supply paper (Washington, D.C.) ; 240. Material type: Text; Format: print available online ; Literary form: Not fiction Publication details: Washington, Govt. Print. Off., 1910 Online resources: Click here to access online Availability: No items available. Add to cart (remove)
	2.	Origin of the zinc and lead deposits of the Joplin region, Missouri, Kansas, and Oklahoma, by C.E. Siebenthal. by Siebenthal, C. E. (Claude Ellsworth), 1869-1930 Series: U.S. Geological survey. Bulletin ; 606 Material type: Text; Format: print ; Literary form: Not fiction Publication details: Washington, Govt. Print. Off., 1915 Availability: No items available. Add to cart (remove)

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