Illinois energy plan staff working paper : the value of energy conservation, a local perspective.

"July 1981."

Illinois energy efficient homes for the 80's.

On cover: Illinois solar 80/81/82.

Illinois energy plan : staff working paper.

Includes bibliographical references.

Illinois energy production, 1960-1977 /

Prepared by the Research Division of the Dept. of Business and Economic Development under contract with the Illinois Institute of Natural Resources.

Illinois energy programs summary : 1981.

Cover title.

Illinois resources.

Mode of access: Internet.

Illinois residential energy efficiency index /

"Illinois Energy Conservation Program."

Illinois solar energy directory.

Mode of access: Internet.

Illinois state buildings energy expense study /

Latest issue consulted: FY01 and projected FY02-04.

Illinois state plan : energy conservation in institutions : institutional buildings grant program /

Cover title: State plan for institutions.

Illinois statewide electric utility plan : optioning resources for the future, 1992-2012.

"ILENR/RE-SP-91/02-1-3."

Illinois water resources : an overview /

Cover title.

Landowners guide to natural resources management incentives /

"November 1994."

Land treatment using plant-soil ecosystems to purify wastewater and recycle resources.

Cover title.

Lighting efficiency for better energy cost control : guidelines for lighting standards and low cost strategies for efficient use of lighting in Illinois state buildings /

"ILENR/BE-86-01."--Cover.