All Publications
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Geology of the Castle Mountain mining district, Montana
No abstract available.
Authors
Walter Harvey Weed, Louis V. Pirsson
Geology of the Denver basin in Colorado
No abstract available.
Authors
Samuel Franklin Emmons, Whitman Cross, George Homans Eldridge
Hydrographic surveys
This circular is intended to answer questions asked by correspondents regarding the progress and character of the work of the "Irrigation Survey" and of related investigations being carried on by the Division of Hydrography of the United States Geological Survey. It also gives a review of the legislation authorizing this work, together with a list of publications of the Geological Survey showing t