@misc{indiciae302e913fb159, title = {Stratigraphy and origin of an area of hummocky glacial topography, northern Wisconsin, U.S.A.}, author = {J.W. Attig and L. Clayton}, year = {1993}, doi = {10.1016/1040-6182(93)90054-j}, url = {https://pubs.usgs.gov/publication/70017351}, note = {Source identifier: 70017351} }