Hands on lake ecology : student workbook.

Includes classroom activities and experiments designed to develop a greater understanding of the forces impacting water quality and the living things within the lake environment.

Hydraulic investigation for the construction of artificial islands in Peoria Lake : final report /

Prepared for Illinois Dept. of Energy and Natural Resources, Energy and Environmental Affairs Division.

Illinois energy efficient homes for the 80's.

On cover: Illinois solar 80/81/82.

Illinois pilot erosion-rate data study /

"January 1993"

Illinois state water plan : status of implementation /

"January 1990."

Inventory of Lake Michigan research projects, 1984-1987 /

Includes indexes.

Lake Michigan water quality report.

Chemical abstracts

Lake Education Assistance Program (LEAP) /

"December 2000"--P. [4]

Lake Education Assistance Program application package /

"IEPA/BOW/98-012."

Lake Michigan bibliography /

v. 1. 1960-1976 -- v. 2. 1977-1986.

Lake Michigan open water and lake bed survey.

Description based on : 1970.

Landscape waste facilities.

"ILENR/RR-92/08."

Lake County transportation study and comprehensive highway plan for coordinated urban and regional comprehensive transportation planning : revised prospectus /

Mode of access: Internet.

Lake Michigan shore water survey : report to the Governor and General Assembly.

Description based on: 1971.

Lake Michigan water allocation study /

"Project number 1300.013."