TY - RPRT TI - Map showing the thickness and character of quaternary sediments in the glaciated United States East of the Rocky Mountains AU - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey AU - David R. Soller PY - 2001 DO - 10.3133/i1970e UR - https://pubs.usgs.gov/publication/i1970E ID - i1970E ER -