tag:digital.library.illinois.edu,2005:/items/b1ee0c20-73cd-0134-1deb-0050569601ca-dGroundrow model part2023-07-20T13:52:24Ztag:digital.library.illinois.edu,2005:Item/627522016-11-01T16:44:32Z2023-07-20T13:52:24ZGroundrow model partUniversity of Illinois at Urbana-Champaign Library