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Publication Extents

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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...
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...