Geology and water resources of the San Luis valley, Colorado - Siebenthal, C. E. (Claude Ellsworth), 1869-1930. (Washington, Govt. Print. Off., 1910)
TC801.U2 no. 240 with : Surface water supply of the United States : North Atlantic Coast. - - Surface water supply of the United States : South Atlantic Coast and Eastern Gulf of Mexico. Washington : Govt. Print. Off.,1910. Bound together subsequent to publication.
"Literature": p. 8-9.
Also available in digital form on the Internet Archive Web site.
Keywords: Geology -- San Luis Valley (Colo. and N.M.); Water-supply -- San Luis Valley (Colo. and N.M.)