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Water Pollution
Dieldrin in Iowa catfish.
Illegal to dump snow on Iowa rivers and lakes.
Warn Iowans of poison in big catfish.
High School biology class finds Des Moines ditch rank with pollution.
Cite pollution at Green Bay.
Federal officials says farmers can obtain loans for animal waste treatment
Warning on poisoned fish in Iowa.
River cities given deadlines to improve sewage plants.
Iowa Attorney General Turner files three suits on pollution.
Test 'clean' additive for detergents.
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