tag:digital.library.illinois.edu,2005:/items/981500a0-82d4-0134-1f08-0050569601ca-4Illinois-Missouri, Nebo quadrangle2022-09-15T18:31:26Ztag:digital.library.illinois.edu,2005:Item/668752016-11-15T17:24:36Z2022-09-15T18:31:26ZIllinois-Missouri, Nebo quadrangleRelief shown by contours and spot heights.University of Illinois at Urbana-Champaign Library