Economic impact study of proposed IPCB amendments to water pollution regulations, R80-6 /

Project no.: 80.235.

Ecological and natural resources manual : a manual for use in preparing the ecological and natural resources portions of environmental reports for highway projects /

Looseleaf for updating.

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

"November 1986."

Ecological distribution of mental disorders : a bibliography /

"October, 1954."

Economic impact study of R81-11 trihalomethane standards for public water supplies /

"Project no. 80-254."

Effects of short term oven aging on volumetrics and selection of N-design /

"Study was conducted in cooperation with the U.S. Department of Transportation, Federal Highway Administration."

Educational materials and programs : IDNR Division of Education.

"11/08"--Colophon.

Economic impact study of proposed IPCB regulation sections 215.240 and 215.207 : final report /

"Printed: June 1987."

Embarras River area assessment /

"Critical Trends Assessment Program."--Cover.

Emergency rescue vehicles : interim evaluation report as of summer 1980 /

"March 1981."

Evaluation of bullfrog, rana catesbeiana, management in Illinois : a report to the Illinois Department of Conservation through the Illinois Natural History Survey /

Prepared by Philip C. Mankin, Jeffery L. Van Orman, Bruce D. Taubert, David P. Philipp.

Enhancement of the HWRIC database : year 2 : with an evaluation of database content /

Prepared for Illinois Hazardous Waste Research and Information Center, HWRIC project number 87-005.

Exposure study of volatile organic compounds in southeast Rockford /

Includes bibliographical references.

Evaluation of Stone Matrix Asphalt : final report /

"January 1996"--Cover.

Erosion and sedimentation in the Illinois River Basin : final report /

"Printed: June 1992."