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.

Agricultural laboratory and field technician cluster /

Project staff: Sharon Schwarz, William Schreck, Ron Reische, Christina Harshman-Wells, Jeff Moss.

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."

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

"March 1988."--Cover.

An intensive survey of Illinois River and its tributaries : a comparison study of 1967 and 1978 stream conditions /

Chiefly tables.

Analysis of septic tank distribution and septage generation rates in Illinois /

"IEPA/WPC/84-003."

An Issues/options paper for comprehensive water quality standards for groundwater /

"December 1988."--Cover.

Aquifers of Illinois : underground sources of drinking water and non-drinking water /

"September, 1981."

Baseline loadings of nitrogen, phosphorus, and sediments from Illinois watersheds : October 1980 - September 1996 /

The purpose of the report is to evaluate baseline loadings of nutrients and sediment to the Mississippi River and the Ohio River from the state of Illinois and to identify the sources of those loads; also evaluated are baseline loadings of nutrients and sediments to the Illinois River from its tributaries.

Beavers and muskrats.

"Mar-2001"--Colophon.

Biological and water quality survey of the Carroll Creek Watershed, Carroll County, Illinois, 1987-1988.

"IEPA/WPC/89-163."--Cover.

Biological and water quality survey of the Vermilion River Vermilion County, Illinois, 1994 /

"May 1995."

Business-education partnerships in Illinois /

Imprint varies.

Centralia Landfill : Centralia Environmental Services, Inc., Prior-Blackwell and Prior 1,2,3 and 4, Centralia, Illinois.

"32339"--Colophon.