. The changing Illinois environment : critical trends : technical report of the Critical Trends Assessment Project. Man; Pollution; Environmental protection; Ecology; Environmental impact analysis. 2500000 - - 2000000 -- 1500000 1000000 -- 500000 O Q O > YEAR. 19M 1989 miaou River Threeridtc Harvest â¡ Dead Shells â Live ShelU. 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 Resource
. The changing Illinois environment : critical trends : technical report of the Critical Trends Assessment Project. Man; Pollution; Environmental protection; Ecology; Environmental impact analysis. 2500000 - - 2000000 -- 1500000 1000000 -- 500000 O Q O > YEAR. 19M 1989 miaou River Threeridtc Harvest â¡ Dead Shells â Live ShelU. 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
