Chemical analysis of surficial sediments from 63 Illinois lakes : summer 1979 /

On cover: Investigations of Illinois surface waters.

Effects of livestock wastes on small Illinois streams : Lower Kaskaskia River Basin and Upper Little Wabash River Basin : summer 1991 /

"July 1992."

Evaluation of Illinois stream sediment data, 1974-1980 /

"IEPA/WPC/84-004."-- Cover.

Hopewellian studies.

Papers presented at a session on Hopewell culture and its extension organized by A. R. Kelly for the Philadelphia meeting of the American Anthropological Association in 1961.

Limnology of Paradise Lake : June-October 1979 /

Cover title.

Limnology of Lake of Egypt : May-October 1979 /

Includes bibliographical references (p. 89-93).

Limnology of Devil's Kitchen Lake : May-October 1979 /

Bibliography: p. 89-93.

Limnology of Lake Mattoon : June-October, 1979 /

On cover: Investigations of Illinois surface waters.

Limnology of Raccoon Lake : June-October, 1979 /

Cover title.

Limnology of Stephen A. Forbes Lakes : May-October, 1979 /

Cover title.

Regional profile: Southwestern Illinois /

Cover title.

Pavement evaluation : phase I, pavement evaluation equipment /

Mode of access: Internet.

Employee benefits for American workers /

"June 1990."

Benthic invertebrates in selected streams of the Piceance Creek Basin, northwestern Colorado, water years 1977-81 /

Bibliography: p. 40-41.

Antiproton annihilation propulsion /

Mode of access: Internet.