tag:digital.library.illinois.edu,2005:/itemsItems2022-09-15T18:31:21Ztag:digital.library.illinois.edu,2005:Item/667992016-11-15T17:24:23Z2022-09-15T18:31:21ZMissouri-Illinois-Kentucky, Wickliffe quadrangle : grid zone 'C'Relief shown by contours and spot heights.University of Illinois at Urbana-Champaign Library