Natural science manual : a manual for preparing the ecological and natural resources portions of highway environmental impact statements /

Includes bibliographies.

Ogle County surface water resources /

"April, 1968."

PLAN-IT EARTH : pairing learners and nature with innovative technology for the environmental assessment of resources, trends, and habitats.

"Illinois."

Piatt County surface water resources /

"January, 1968."

Perry County surface water resources /

"March, 1969."

Prairie parklands : an inventory of the region's resources /

"A project of the critical trends assessment program."

Potential water resources of southern Illinois /

Bibliography: p. 96-97.

Potential relaxation of Illinois sulfur dioxide regulations and source-specific emission limits and their effect on the use of Illinois coal /

"October, 1983."

Proposed water resources capital program.

Fiscal year ends June 30.

Randolph County surface water resources / by Donald M. Garver.

Mode of access: Internet.

Renewable Energy Resources Program report.

Mode of access: Internet.

Recycle our available resources : grades 4-8 /

"September 1991."

Report of the Secretary of State and Human Resources Advisory Committee on handicapped parking issues : submitted to the Illinois legislature, January 1987.

Cover title.

Report on the Illinois Energy Resources Commission.

Description based on: 1979-1980.

Saline County surface water resources /

Includes bibliographical references (p. 48-49).