An intensive survey of Illinois River and its tributaries : a comparison study of 1967 and 1978 stream conditions /

Chiefly tables.

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."

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."

An Air monitoring survey design for toxic air pollutants : final report /

"ILENR/RE-AQ-89/05."

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

Mode of access: Internet.

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

"September, 1981."

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."

Baseline loadings of nitrogen, phosphorus, and sediments from Illinois watersheds : October 1980 - September 1996 /

The purpose of the report is to evaluate baseline loadings of nutrients and sediment to the Mississippi River and the Ohio River from the state of Illinois and to identify the sources of those loads; also evaluated are baseline loadings of nutrients and sediments to the Illinois River from its tributaries.

Assessment and classification of Illinois lakes /

"Staff report."