TY - RPRT TI - Changes in upland wildlife habitat on farmland in Illinois 1920-1987 AU - C. A. Ribic AU - R.E. Warner AU - P.C. Mankin PY - 1998 DO - 10.1007/s002679900106 UR - https://pubs.usgs.gov/publication/70020695 ID - 70020695 ER -