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

"December, 1994."

An intensive survey of the Mackinaw River Basin, 1987 /

"September 1988."--Cover.

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

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

An intensive survey of the Henderson Creek Basin, 1994 /

"February, 1996."

An intensive survey of the Indian Creek Basin, 1992 /

"IEPA/WPC/95-2."--Cover.

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

"March 1988."--Cover.

An intensive survey of the Elkhorn Creek Basin, 1985.

"IEPA/WPC/88-017."--Cover.

An intensive survey of the Pecatonica River Basin, 1984-1985.

"February 1988."--Cover.

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

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

An assessment of the water quality of the Rock River Basin derived from a biological investigation /

"Prepared for the Illinois Environmental Protection Agency."

An intensive survey of the Embarras River Basin, 1987 /

"IEPA/WPC/89-212."--Cover.

An intensive survey of the Bay Creek Watershed, July 1992 /

"IEPA/WPC/95-020"--Cover.

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

"July, 1993."

An intensive survey of the Little Vermilion River as affected by seasonal variation, 1992 /

"March 1993."

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

"February 1988"--Cover.