Sample collector's handbook /

Mode of access: Internet.

Sample collector's handbook /

Cover title.

Waterworks operations : course curriculum guide /

Endorsed by Illinois Water Supply Operator Certification Advisory Board.

Winnebago County groundwater study /

"November 1988."--Cover.

Our land and water resources; current and prospective supplies and uses.

Bibliography: p. 51.

Manufacturers of complete cyanide plants, tanks, mining and mill supplies.

Mode of access: Internet.

Hydrogeologic evaluation of sand and gravel aquifers for municipal groundwater supplies in East-Central Illinois /

"Prepared in cooperation with the Illinois Department of Transportation. Division of Water Resources."

Illinois state water plan : status of implementation /

"January 1990."