An assessment of need for the Illinois Forest Legacy Program.

Cover title.

An Archaeological reconnaissance of the proposed FAP 406 corridor, Logan and Tazewell Counties, Illinois /

Report of a survey conducted under the auspices of the Illinois Archaeological Survey in cooperation with the U.S. Federal Highway Administration, the U.S. Heritage Conservation and Recreation Service, and the Illinois Dept. of Transportation.

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

"IEPA/WPC/84-003."

An intensive water quality survey of the Rock River from Rockford to Byron, Illinois, May-October, 1978 /

Bibliography: p. 35.

Annotated catalog of type specimens in the Illinois Natural History Survey Fish Collection /

"SR737123"--P. 2 of cover.

Analysis of the refined DRG as a severity of illness system : the Illinois experience /

Cover title.

Analysis of the sulfur content of Illinois streams, with emphasis on contributions from the atmosphere /

Cover title.

Analysis of water quality : Rock River Basin in Illinois /

Cover title.

Analysis of water quality in the Galesburg Plain (McKee Creek, Lamoine River, Sugar Creek, Spoon River, and Kickapoo Creek), Illinois /

Bibliography: p. 30-1 to 30-4.

Analysis of water quality : upper Kaskaskia River Basin, Illinois /

Bibliography: p. 31-1-31-4.

Aquatic plants of Illinois; an illustrated manual including species submersed, floating, and some of shallow water and muddy shores

Bibliography: p. 129-132.

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

"September, 1981."

Archaeology at the Whitley site : an early historic farmstead on the prairies of eastern Illinois /

Includes bibliographical references (p. [121]-124).

Availability of the Colchester coal for mining in northern and western Illinois /

This report is the fourth in a series to assess the availability of coal resources for future mining in Illinois.

Availability of the Danville, Jamestown, Dekoven, Davis, and Seelyville coals for mining in selected areas of Illinois /

Includes bibliographical references (p. 39-40).