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Page 7323, results 183051 - 183075

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Twenty-Second Annual Report of the Director of the United States Geological Survey, 1900-1901: Part I - Director's report and a paper on asphalt and bituminous rock deposits
Charles D. Walcott
1902, Annual Report 22
The work of the Geological Survey during the fiscal year 1900-01 was mainly a continuation of that of previous years, described in former reports. The organization was changed somewhat (see p. 48), but in a general way similar results were reached, which added materially to the sum of geologic and...
Preliminary list of deep borings in the United States Part II: Nebraska-Wyoming
Nelson Horatio Darton
1902, Water Supply Paper 61
The wells and borings reported in the paper are all more than 400 feet in depth. The information concerning them has been obtained partly from replies to circular letters sent to all parts of the United States an  to lack of knowledge on the part of correspondents, and to the...