Illinois fluorspar /

Includes bibliographical references (p. 34-36).

Chester area : Randolph County /

"April 8, 1950."

Shelbyville area : Shelby County /

"April 22, 1950."

Warsaw area : Hancock County /

"September 27, 1947."

Illinois natural resources : an industrial developmental asset /

Cover title.

Report.

"Catalogue of the Library of the Illinois State Museum of Natural History": Report for 1909/10, pt. II (p. 52-445.).

Municipal parks and playgrounds in Illinois. August, 1939.

Mode of access: Internet.

Publications.

Mode of access: Internet.

General index to Collections, Journals, Publications, 1899-1928;

Mode of access: Internet.

Industrial minerals notes.

Chemical abstracts,

Cooperative mining series. Bulletin [1]-33.

No. 33 is the final no. of this series.

Birds of the State College Region, Pennsylvania /

Cover title.

Bulletin - Illinois Natural History Survey.

Chemical abstracts

Municipal water supplies of Illinois,

Illinois. University. Bulletin, v. 5, no. 7.

Story of Illinois series.

Mode of access: Internet.