TY  - RPRT
TI  - 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
AU  - D. R. Soller
AU  - P.H. Packard
AU  - C.P. Garrity
PY  - 2012
DO  - 10.3133/ds656
UR  - https://pubs.usgs.gov/publication/ds656
ID  - ds656
ER  -