A resource directory to local involvement in river & stream stewardship : a citizen's guide.

"August 1992."

A report on the status of the Vehicle Emission Test Program, January 1, 1990- December 31, 1990.

"April 1991." -- 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 survey of activities of local councils of defense.

Mode of access: Internet.

Acquired immune deficiency syndrome (AIDS).

"June 13, 1984."

Across the divide : reconsidering the other /

"The exhibition "Across the Divide: Reconsidering the Other", organized by the Illinois State Museum, was presented at the following sites: Illinois State Museum, Springfield, Illinois, August 15, 2008 - January 11, 2009; Illinois State Museum Gallery, Chicago, Illinois, February 9 - May 8, 2009."

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

Bibliography: p. 61-62.

Affirmative action plan /

"Affirmative action policy also is included in the Office operations guidelines."

Advisory report on the health effects of radium in drinking water /

"Project no. 90.002."

Air quality monitoring.

"October 1998."

Air, land & water : activity book /

"Fifth and sixth grades."

Air, land & water : activity book : fifth and sixth grades /

"Materials may be duplicated for classroom/activity use."

Air, land & water : teachers' manual : fifth and sixth grades /

"Materials may be duplicated for classroom/activity use."

Aftermarket catalytic convertors : guide to their purchase, installation, and use /

"January 1989."

An intensive survey of the Mackinaw River Basin, 1987 /

"September 1988."--Cover.