tag:digital.library.illinois.edu,2005:/itemsItems2022-09-15T18:31:18Ztag:digital.library.illinois.edu,2005:Item/668042016-11-15T17:24:25Z2022-09-15T18:31:21ZIllinois, Coulterville quadrangle : topographyRelief indicated by contours and spot heights.University of Illinois at Urbana-Champaign Librarytag:digital.library.illinois.edu,2005:Item/667872016-11-15T17:24:18Z2022-09-15T18:31:20ZIllinois, Okawville quadrangle : topographyContour interval 20 feet.University of Illinois at Urbana-Champaign Librarytag:digital.library.illinois.edu,2005:Item/700562016-11-30T19:20:05Z2022-09-15T18:31:54ZIllinois-Iowa, Edgington quadrangle : topographyContour interval 20 feet.University of Illinois at Urbana-Champaign Librarytag:digital.library.illinois.edu,2005:Item/669172016-11-15T17:24:54Z2022-09-15T18:31:28ZIllinois, Sumner quadrangle : topographyRelief shown by contours.University of Illinois at Urbana-Champaign Librarytag:digital.library.illinois.edu,2005:Item/700822016-11-30T19:20:13Z2022-09-15T18:31:55ZIllinois-Missouri, Chester quadrangle : topographyContour interval 20 feet.University of Illinois at Urbana-Champaign Librarytag:digital.library.illinois.edu,2005:Item/669472016-11-15T17:25:06Z2022-09-15T18:31:30ZIllinois (La Salle County), Ottawa quadrangle : topographyContour interval 20 feet.University of Illinois at Urbana-Champaign Librarytag:digital.library.illinois.edu,2005:Item/700142016-11-30T19:19:51Z2022-09-15T18:31:52ZIllinois, Centralia quadrangle : topographyContour interval 10 feet.University of Illinois at Urbana-Champaign Librarytag:digital.library.illinois.edu,2005:Item/668232016-11-15T17:24:28Z2022-09-15T18:31:22ZIllinois, Marseilles quadrangle : topographyRelief shown by contours and spot heights.University of Illinois at Urbana-Champaign Librarytag:digital.library.illinois.edu,2005:Item/667512016-11-15T17:24:03Z2022-09-15T18:31:18ZIllinois, Cave in Rock quadrangleContour interval 20 feet.University of Illinois at Urbana-Champaign Library