Monitoring the condition of our nation's ecological resources.

Mode of access: Internet.

Inventory of resource rich areas in Illinois : an evaluation of ecological resources /

"IDNR/EEA-96/08"--T.p. verso.

Strategic plan for the ecological resources of Illinois.

"Gretchen Bonfert, Green Strategies, Springfield, Illinois, compiled this strategic plan and convened the public meetings whereby participants contributed to the plan."-- p. ii.

The changing Illinois environment : critical trends : technical report of the Critical Trends Assessment Project.

"June 1994."

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.

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

Includes bibliographies.

Ecological studies of fish near a coal-fired generating station and related laboratory studies : Wisconsin power plant impact study /

"Grant no. R803971."

Targhee National Forest ecological unit inventory /

Includes index to map sheets.