tag:digital.library.illinois.edu,2005:/items/a0e587d0-994e-0134-2096-0050569601ca-c
Illinois, Murphysboro quadrangle : topography
2022-09-15T18:31:50Z
tag:digital.library.illinois.edu,2005:Item/69981
2016-11-30T19:19:42Z
2022-09-15T18:31:50Z
Illinois, Murphysboro quadrangle : topography
Contour interval 20 feet.
University of Illinois at Urbana-Champaign Library