. The changing Illinois environment : critical trends : technical report of the Critical Trends Assessment Project. Man; Pollution; Environmental protection; Ecology; Environmental impact analysis. 60000 1987 1988 1989 1990. Illinois River Misc. Species Harvest 1987 1988 1989 1990 Mississippi River Misc. Species Harvest 1200000 1000000- 800000 J8 600000 400000. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Illinois. Dept.
. The changing Illinois environment : critical trends : technical report of the Critical Trends Assessment Project. Man; Pollution; Environmental protection; Ecology; Environmental impact analysis. 60000 1987 1988 1989 1990. Illinois River Misc. Species Harvest 1987 1988 1989 1990 Mississippi River Misc. Species Harvest 1200000 1000000- 800000 J8 600000 400000. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Illinois. Dept. of Energy and Natural Resources; Critical Trends Assessment Project. Springfield, Ill. : Ill. Dept. of Energy and Natural Resources
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Keywords: ., bookcentury1900, booksubjecte, booksubjectecology, booksubjectman
