Databas of USGS Map I-1970 map showing the thickness and character of Quaternary sediments in the glaciated United States east of the Rocky Mountains /
|Format:||Government Document Online Book|
[Denver, CO] :
U.S. Dept. of the Interior, U.S. Geological Survey,
|Series:||Data series (Geological Survey (U.S.)) ;
|Online Access:||ONLINE VERSION|
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