The DuPage River basin : an inventory of the region's resources.

"February 2001."

The driftless area : an inventory of the region's resources /

"A project of the Critical Trends Assessment Program."

The Illinois Big Rivers : an inventory of the region's resources /

Statement of responsibility from P. [3] of cover.

The Embarras River basin : an inventory of the region's resources /

"A product of the Critical Trends Assessment Program (CTAP) and the Ecosystems Program of the Illinois Department of Natural Resources (IDNR)."

The Heart of the Sangamon : an inventory of the region's resources.

"A project of the Critical Trends Assessment Program."

The Illinois Headwaters : an inventory of the region's resources.

"A product of the Critical Trends Assessment Program (CTAP) and the Ecosystems Program of the Illinois Department of Natural Resources (IDNR)"--P. [2] of cover.

The Illinois River bluffs : an inventory of the region's resources /

Statement of responsibility from P. [3] of cover.

The Kaskaskia River Basin : an inventory of the region's resources.

"January 2001"

The Kishwaukee River Basin : an inventory of the region's resources /

"A product of the Critical Trends Assessment Program (CTAP) and the Ecosystems Program of the Illinois Dept. of Natural Resources (DNR)"--P. [2] of cover.

The lower Rock River basin : an inventory of the region's resources /

"A project of the Critical Trends Assessment Program."

The Mackinaw River Basin : an inventory of the region's resources / [Susan L. Post].

"A product of the Critical Trends Assessment Program (CTAP) and the Ecosystems Program of the Illinois Dept. of Natural Resources (DNR)"--P. [2] of cover.

The Kinkaid area : an inventory of the region's resources /

"June 2002."

Thorn Creek : an inventory of the region's resources.

"A project of the Critical Trends Assessment Program."

The Rock River Country : an inventory of the region's resources.

"IDNR/EEA-96/09."--T.p. verso.

The Spoon River basin : an inventory of the region's resources 1998 /

"A product of the Critical Trends Assessment Program (CTAP) and the Ecosystems Program of the Illinois Department of Natural Resources (IDNR)--P. [2] of cover.