An application of factor analysis to water quality data /

Cover title.

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

Bibliography: p. 35.

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

"December 1988."--Cover.

Analysis of water quality standards, Upper Sangamon Basin, Illinois /

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.

Annual summary of water quality and biological investigations in Lake Shelbyville Basin.

"Annual report submitted to the U.S. Army Corps of Engineers, St. Louis District, St. Louis, Missouri."

Assessment of nonpoint source impacts on Illinois water quality.

"IEPA/WPC/88-020."

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 three tributaries to the Sangamon River : South Fork basin, Mosquito Creek and Long Point Slough, September thru November, 1989 : Staff Report /

"May 1991."

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

"May 1995."

Data collection methods and summaries for the assessment of stream water quality in the Vermilion River Basin (Wabash River), 2001 /

Cover title.

Economic impact of existing ammonia nitrogen water quality standard, IPCB chapter 3 rule 203(f) /

"July, 1981."

Economic impact of proposed water quality and effluent standard amendments for water in the Sangamon River Basin /

"November 1986."