Groundwater quality standards in other states : a survey report

"Printed: January 1988."

Heat extraction from the ANL research salt gradient solar pond /

"ILENR/AE-86/03."

Historical industrial waste disposal practices in Winnebago County, Illinois : 1870-1980 /

"HWRIC RR 011" -- cover.

How to run a community recycling center : a resource guide to low-technology recycling in Illinois /

Location of title page varies with copies.

ILEED newsletter.

Description based on: Vol. 3, no. 3 (Fall 1990); title from caption.

ILEED News /

Title from caption.

Illinois coal mining costs /

"ILENR/RE-PR-92/01."

Illinois Coal Bond Fund.

"September, 1985."

Illinois energy data review /

Title from caption.

Illinois groundwater protection act.

"Effective September 24, 1987."

Illinois energy efficient homes for the 80's.

On cover: Illinois solar 80/81/82.

Illinois land report : Rice Lake Conservation Area.

"August 29, 1983."

Illinois recycled materials market directory.

Description based on: December 1987.

Illinois synthetic fuels facilities siting survey : Perry County /

Bibliography: p. 119-120.

Illinois solar weather program /

"March 1983."