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.

A biological and water quality survey of Sugar Creek and tributaries, Crawford County, Illinois, August-September, 1992 /

"IEPA/WPC/93-063."--Cover.

A review of the sediment delivery ratio techniques component of the Highland Silver Lake watershed project /

Prepared in cooperation with the Soil Conservation Service, USDA.

A water quality survey of the Grand Calumet River from the Indiana State line to Burnham, Illinois : the Grand Calumet River portion of segment A-12 Des Plaines/Lake Michigan Basins, April-August, 1978.

Edited by Robert Schacht.

A water quality investigation of the Crooked Creek Basin (Kaskaskia River Basin Segment A-02), July - August 1978 /

Bibliography: p. 61-62.

Air sampling network:

Mode of access: Internet.

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.