TY - BOOK AU - Nelson, W. John. CN - QE105 CN - QE105 CY - Champaign, Ill. : DA - 1987. ID - 120403 KW - Coal KW - Coal KW - Coal KW - Coal KW - Coal PB - Illinois State Geological Survey, PP - Champaign, Ill. : PY - 1987. T1 - The Hornsby district of low-sulfur Herrin coal in central Illinois (Christian, Macoupin, Montgomery, and Sangamon counties) / TI - The Hornsby district of low-sulfur Herrin coal in central Illinois (Christian, Macoupin, Montgomery, and Sangamon counties) / VL - 540 ER -