Illinois River Bluffs area assessment /
Critical Trends Assessment Program
Illinois. Dept. of Natural Resources. Office of Scientific Research and Analysis.
Critical Trends Assessment Project.
Illinois State Geological Survey.
Illinois. Dept. of Natural Resources.
Springfield, Ill. :Illinois Dept. of Natural Resources,1998-
"The Illinois River Bluffs Area Assessment examines an area in west-central Illinois that includes parts of the upper and lower Illinois River watersheds from the vicinity of Hennepin southward to Eas
"Critical Trends Assessment Program."--Cover.
Contents: v. 1. Geology -- v. 2. Water resources -- v. 3. Living resources -- v. 4. Socio-economic profile. Environmental quality. Archaeological resources -- v. 5. Early accounts of the ecology of the Illinois
Illinois River Watershed
Illinois River Watershed (Ill.)
Natural resources conservation areas
Natural resources surveys
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