An intensive survey of the Vermilion River basin, Illinois River drainage, summer 1990 /

"IEPA/WPC/93-192."--Cover.

An Examination of medical care costs of patients with AIDS in Illinois /

"June, 1989."

An integrated biomass energy system for Illinois agriculture : final report /

"Contract FY 81-8/AE-8."

An analysis of the low emission vehicle program in Illinois /

Cover title.

Analysis of septic tank distribution and septage generation rates in Illinois /

"IEPA/WPC/84-003."

An intensive water quality survey of the Rock River from Rockford to Byron, Illinois, May-October, 1978 /

Bibliography: p. 35.

An investigation of volatile organic chemical contramination in groundwater new Rockton, Illinois /

"March 1988."

Annual exhibition by artists of the Old Northwest Territory : Ohio, Indiana, Michigan, Wisconsin, Illinois.

Mode of access: Internet.

Annual report, Division of Environmental Management.

Mode of access: Internet.

Aquifers of Illinois : underground sources of drinking water and non-drinking water /

"September, 1981."

Assessment of nonpoint source impacts on Illinois water quality.

"IEPA/WPC/88-020."

Assessment of the effect on traffic safety of the lowering of the legal drinking age in Illinois.

On cover: Illinois traffic safety programs, report of evaluation or assessment.

Assessment of the effect of the 55 mile per hour speed limit on Illinois traffic safety : report to the Eightieth General Assembly.

Cover title: Illinois traffic safety programs.

Assessment of the effect on traffic accidents of the lowering of the legal drinking age in Illinois /

On cover: Illinois traffic safety programs, report of evaluation or assessment.

Annual summary of the physical highway research program in Illinois.

"Prepared by Physical Research Section, Bureau of Research and Planning."