Illinois inventory of greenhouse gas emissions and sinks : 1990 /

"September 1993."

Illinois State water plan 1981 progress report /

Mode of access: Internet.

Illinois state water plan : status of implementation /

"January 1990."

Illinois state water plan : critical issues, cross-cutting topics, operating issues /

"January 1984."

Illinois water monitoring strategy, 2007-2012.

"IEPA/BOW/07-005."--Cover.

Illinois Volunteer Lake Monitoring Program newsletter.

Description based on: Sept. 1990; title from caption.

Limnology of Paradise Lake : June-October 1979 /

Cover title.

Limnology of Cedar Lake, Lake County, Illinois : May-October, 1979.

Cover title.

Limnology of Johnson Sauk Trail Lake, Henry County, Illinois : June-October, 1979.

Cover title.

Limnology of Lincoln Trail Lake, Clark County, Illinois : May-October, 1979.

Cover title.

Limnology of Long Lake, Lake County, Illinois : May-October, 1979.

Cover title.

Limnology of Otter Lake, Macoupin County, Illinois : May-October, 1979.

Cover title.

Limnology of Lake Shabbona, De Kalb County, Illinois : May-October, 1979.

Cover title.

Limnology of Lake Taylorville, Christian County, Illinois : May-October, 1979.

Cover title.

Limnology of Lake of Egypt : May-October 1979 /

Includes bibliographical references (p. 89-93).