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Page 6310, results 157726 - 157750

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Compilation of field methods used in geochemical prospecting by the U.S. Geological Survey
Hubert William Lakin, Frederick Norville Ward, Hy Almond
1952, Circular 161
The field methods described in this report are those currently used in geochemical prospecting by the U. S. Geological Survey. Some have been published, others are being processed for publication, while others are still being investigated. The purpose in compiling these methods is to make them readily available in convenient...
Coal resources of Virginia
Andrew Brown, Henry L. Berryhill Jr., Dorothy A. Taylor, James V. A. Trumbull
1952, Circular 171
The U. S. Geological Survey and the Virginia Geological Survey have cooperated in preparing this reappraisal of the coal resources of Virginia, which is based on a study of all information" on the reserves of the State available in the publications and files of the two organizations, supplemented by mine...