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Page 6873, results 171801 - 171825

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Saline-water resources of North Dakota
Charles Joseph Robinove, R.H. Langford, J.W. Brookhart
1958, Water Supply Paper 1428
Natural waters in North Dakota have been arbitrarily defined in this report as saline or fresh; water containing more than 1,000 ppm (parts per million) of dissolved solids or having a specific conductance greater than 1,400 micromhos per centimeter at 25°C is considered to be saline. A large proportion of...
Development of photogrammetry in the U.S. Geological Survey
Morris M. Thompson
1958, Circular 218
Photogrammetry, the science or art of obtaining reliable measurements by means of photography, is now used extensively in topographic mapping. Precise photogrammetric plotting instruments now enable the map maker to extract from aerial photographs much.of the detailed information required for drawing the map that formerly was acquired by laborious ground...
Borate deposits of the Mojave Region, California
Ward C. Smith
1958, Open-File Report 440
Output of the United States borate producers reached approximately 1,000,000 tons in 1957, nearly four times the average annual production of 1941-45. Increasing consumption for long-established uses and several new ones accounts for the rise; further rise, for new uses such as high energy fuels, lies ahead. Among known borate deposits, the largest are at...