Simplified techniques for determination of theoretical and effective self-purification coefficients of polluted streams /

Mode of access: Internet.

Basic waste characteristics at winter recreation areas; progress report. A technical project report

Mode of access: Internet.

Adsorption of biochemically resistant materials from solution. 2. /

Mode of access: Internet.

A biological investigation of the Kishwaukee River and its tributaries (segment A-02 of the Rock River Basin April-July, 1976 /

Bibliography: p. 37.

A biological investigation of the South Fork, Sangamon River and tributaries /

Bibliography: leaf 19.

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 intensive survey of the Embarras River Basin, 1987 /

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