Database for USGS Map I-1970 - Map showing the thickness and character of Quaternary sediments in the glaciated United States east of the Rocky Mountains

Data Series ◽  
10.3133/ds656 ◽  
2012 ◽  
Author(s):  
D.R. Soller ◽  
P.H. Packard ◽  
C.P. Garrity
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