Summary of investigations :
Geological Survey research 1963 ; a summary of recent scientific and economic results, accompanied by a list of publications released in fiscal 1963, a list of geologic and hydrologic investigations in progress, and a report on the status of topographic mapping.
Washington, D.C : U.S. G.P.O, 1963.
Hydrology / Research /
Geology > Geology / Research > Geology / Research / United States.
ix, 300 p :
ill., maps ;
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