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Page 5943, results 148551 - 148575

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Allanites from the Boulder Creek batholith, Colorado
Nelson L. Hickling
1965, Open-File Report 65-70
This study of accessory allanites from the Boulder Creek batholith is an adjunct to the comprehensive petrologic study that batholith by George Phair and David Gottfried of the U.S. Geological Survey....
The operation and maintenance of a crest-stage gaging station
John Friday
1965, Open-File Report 66-45
The purpose of this manual is to familiarize field personnel with the procedures involved in operating crest-stage gaging stations. Crest-stage gages are used to determine the elevation of a peak stage occurring at a specific location in a stream. A crest-stage gage consists of a length of 14-inch diameter pipe installed...
Preliminary map of the conterminous United States showing depth to and quality of shallowest ground water containing more than 1,000 parts per million dissolved solids
John Henry Frederick Feth
1965, Hydrologic Atlas 199
In this atlas, mineralized ground water is viewed presently as a source of water in some areas, but in much of the country as a source for future development. Mineralized water underlies large areas of the country, and its importance will grow as present supplies of fresh water are appropriated...