American Indian ways of life; an interpretation of the archaeology of Illinois and adjoining areas.

Bibliography: p. 67-69.

An annotated check-list of the birds of Illinois /

Includes index.

An intensive survey of Bear Creek in West-Central Illinois, August-September, 1992 /

"December, 1994."

An intensive survey of Shawnee National Forest region streams of southern Illinois, 1986-1987 /

"IEPA/WPC/90-171."--Cover.

An intensive survey of the Eagle Creek Basin, Saline and Gallatin Counties, Illinois : 1986-1987 /

"March 1988."--Cover.

An intensive survey of the Sugar Creek Basin, Crawford County, Illinois, 1986 /

"IEPA/WPC/88-030."--Cover.

An intensive survey of Otter Creek, Jersey County, Illinois, July, 1992 /

"July, 1993."

An Intensive survey of the DesPlaines River Basin from the Wisconsin state line to Joliet, Illinois, 1983-1984 : staff report /

"February 1988"--Cover.

An assessment of regional ground-water contamination in Illinois /

"HWRIC RR 023."

An intensive survey of the Fox River Basin from the Wisconsin State line to Ottawa, Illinois, 1982 /

Survey made cooperatively by the Illinois Environmental Protection Agency and the Illinois Dept. of Conservation.

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

Chiefly tables.

An investigation of a volatile organic chemical plume in northern Winnebago County, Illinois /

"August 1984."

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

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

An Illinois pavement feedback system : feasibility and system requirements /

"Project IHR-517, Illinois Cooperative Highway Research Program."

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

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