Economic impact of combined sewer overflow : regulation (rule 602) in Illinois /

"Project no. 20.137."

Economic impact of a suspension of Rule 203 as it applies to an unnamed tributary of the Vermilion River, Vermilion County, Illinois /

"Project no. 80.159."

Economic assessment of resources recovery and utilization from coal fine wastes /

"Project no. 80.183."

Economic impact of proposed regulation R77-12 (Rule 950) on wastewater sludge disposal in the State of Illinois /

Includes bibliographical references.

Economic impact of requiring maintenance/malfunction plans for air pollution control equipment, R79-3 /

Project no. 10.080.

Effect of RACT II environmental controls in Illinois, R80-5 /

"August 1981."

Energy and labor cost of alternative coal-electric fuel cycles /

"Project no. 80.172."

Evaluation of existing data on discharges from active coal mines in Illinois /

"Project no. 60.040."

Flood hazard mitigation plan : Village of Thebes, Illinois : adopted by the Village Board of Trustees, January 12, 1984 /

Mode of access: Internet.

Guide to the geology of Illinois Beach State Park and the Zion Beach-Ridge Plain, Lake County, Illinois /

"October 28, 2000."

Guide to the geology of Siloam Springs State Park area, Adams and Brown Counties, Illinois /

"May 13, 2000."

Guidelines and forms for inspection of Illinois dams.

Cover title.

Hazard mitigation plan : Village of Kampsville, Illinois /

"September 1985."

Illinois 1995 endangered & threatened plant species /

Mode of access: Internet.

Identification of sources causing TSP non-attainment in the Peoria area : analysis of historical high-volume filters /

"Project no. 10.064."