TY - BOOK T1 - High-extraction coal mining in Illinois :effects on crop production, 1985-1987 / DA - Illinois State Geological Survey, 1988. CY - [Champaign, ILL] : AU - Darmody, Robert G. VL - 4 CN - TN805.I3 CN - TN805.I3 PP - [Champaign, ILL] : PY - Illinois State Geological Survey, 1988. N1 - "Cooperating agencies: Illinois State Geological Survey, Illinois Department of Energy and Natural Resources; Bureau of Mines, United States Department of the Interior." N1 - "IMSRP-IV." ID - 123058 KW - Coal mines and mining KW - Mine subsidences TI - High-extraction coal mining in Illinois :effects on crop production, 1985-1987 / ER -