@misc{indiciaeefaff35d35f1, title = {The Late Wisconsin glacial record of the Laurentide ice sheet in the United States}, author = {D.M. Mickelson and Lee Clayton and David S. Fullerton and H.W. Borns}, year = {1983}, url = {https://pubs.usgs.gov/publication/70208071}, note = {Source identifier: 70208071} }