Results: 1 - 3 of 3
Dec 31, 1968
Earth Sciences Report
… less than 500 parts per million total dissolved solids in the Hand Hills to soft …
Dec 31, 1979
Earth Sciences Report
… km 3 (3300 sq mi). Mean annual total precipitation varies from 460 … is generally excellent. Total dissolved solids content of groundwaters …
Dec 31, 1970
Earth Sciences Report
… being of secondary importance. Total dissolved solids are generally less than …