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.

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

"August 1981."

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

"Project no. 60.040."

Extracts from the "Rules" of the Dept. of Personnel, state of Illinois, which apply to the personnel of this [Military and Naval] Department, effective 1 August 1957.

Title from text.

Glacial sediments, landforms, paleosols, and a 20,000-year-old forest bed in East-Central Illinois/

Mode of access: Internet.

Illinois energy plan staff working paper : the value of energy conservation, a local perspective.

"July 1981."

Illinois Forests.

"Funds for this publication were provided by the Illinois Forestry Development Council, Illinois Department of Natural Resources, Division of Forest Resources, and by the Dept. of Natural Resources and Environmental Sciences, University of Illinois at Urbana-Champaign"--T.p. verso.

Illinois energy production, 1960-1977 /

Prepared by the Research Division of the Dept. of Business and Economic Development under contract with the Illinois Institute of Natural Resources.

Illinois Landsat feasibility study /

Prepared for the Institute of Natural Resources by John Bishop in cooperation with the Dept. of Local Government Affairs and Illinois Environmental Protection Agency.

Illinois state plan : energy conservation in institutions : institutional buildings grant program /

Cover title: State plan for institutions.

Landowners guide to natural resources management incentives /

"May 1997-Jim Edgar, Governor-State of Illinois"

Neotectonics of the Northern Mississippi embayment/

Mode of access: Internet.