Coal & Illinois industry : the impact of the National Energy Acts of 1978 /

Doc. No. 79/33.

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

"Project no. 20.137."

Economic impact of proposed water quality and effluent standard amendments for water in the Sangamon River Basin /

"November 1986."

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 study of proposed IPCB regulation sections 215.240 and 215.207 : final report /

"Printed: June 1987."

Evaluation of bullfrog, rana catesbeiana, management in Illinois : a report to the Illinois Department of Conservation through the Illinois Natural History Survey /

Prepared by Philip C. Mankin, Jeffery L. Van Orman, Bruce D. Taubert, David P. Philipp.

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

"Project no. 60.040."

Fertilizer application rates and nitrate concentrations in Illinois surface waters : a report to the Illinois Institute for Environmental Quality /

Includes bibliographical references.

Fluoride in Illinois : sources, environmental and health effects, and a proposed ambient standard /

Bibliograhy: p. 71-84.

Hydraulic investigation for the construction of artificial islands in Peoria Lake : final report /

Prepared for Illinois Dept. of Energy and Natural Resources, Energy and Environmental Affairs Division.

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

"July 1981."

Illinois land report : Salem Township of Knox County : final [report], June 24, 1990.

"Illinois lands unsuitable for mining program."

Phase II report : preliminary investigation of small-scale hydropower potential at five sites in Illinois /

"Project no. 80.190."