Oil and gas drilling in Illinois; monthly report.

At head of title, -Dec. 1978: State of Illinois, Dept. of Registration and Education; Jan. 1979-: State of Illinois, Illinois Institute of Natural Resources.

Paleochannel across Louden Anticline, Fayette County, Illinois : its relation to stratigraphic entrapment of petroleum in the Cypress sandstone /

Includes bibliographical references.

Phase II report : preliminary investigation of small-scale hydropower potential at five sites in Illinois /

"Project no. 80.190."

Phase I diagnostic / feasibility study of Channel Lake and Lake Catherine, Lake County, Illinois /

"December 27, 2000."

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

"A project of the critical trends assessment program."

Private funding opportunities in Illinois by county for soil and water conservation districts.

Information obtained from the National data book, 6th edition.

Screening of pesticides and other toxic chemicals for potential adverse environmental effects in Illinois /

"Project no. 90.020."

Source contributions to TSP non-attainment in East Moline and Milan, Illinois /

Project no. 10.084.

The birds of America : prints from the collection of the Illinois State museum /

"This exhibition has been funded in part by the Division of Resource Protection and Stewardship, Illinois Department of Natural Resources, and the United States Forest Service."--P. 2.

The Illinois Natural History Survey reports.

Latest issue consulted: No. 372 (summer 2002).

The Impact of sulphur dioxide regulations on the market for Illinois coal /

"Project no. 80.187."

The prospect for controlled trading of air pollution rights in the metro-east area of Illinois /

Cover title: Prospects for controlled trading of air pullution rights in the metro east area of Illinois.

Legal, regulatory and institutional aspects of environmental and natural resources management in Malaysia /

Mode of access: Internet.

Conserving our natural resources : a 4-H leader's guide.

Prepared by the National 4-H Developmental Committee on Conservation of Natural Resources.

Conserving our natural resources : a 4-H leader's guide.

"May 1964"--P. [3] of cover.