Geological Survey research, 1980 :
a summary of recent significant scientific and economic results accompanied by a list of geologic, hydrologic, and cartographic investigations in progress.
|Corporate Author:||Geological Survey (U.S.)|
Washington : U.S. G.P.O., 1980 [i.e. 1981]
Geology > Geology / Research > Geology / Research / United States.
Geology > Geology / United States.
ix, 459 p. ;
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||University of California|