Earth history field trip for high school science teachers : Jacksonville, Illinois, October 22, 1949 /

Gilbert O. Raasch, Conference director; Principal John Agger, Conference host.

Oil investigations in Illinois in 1916, under direction of Fred H. Kay.

"Work in cooperation with U.S. Geological Survey."

Oil and gas development and possibilities in east-central Illinois. (Clark, Coles, Douglas, Edgar and parts of adjoining counties)

At head of title: State of Illinois. Department of registration and education. Division of the state geological survey.

Rock Island-Moline area : Rock Island County, guide leaflet for Illinois Academy of Science /

"May 6, 1950."

High-extraction coal mining in Illinois : effects on crop production, 1985-1987 /

"IMSRP-IV."

Illinois fluorspar /

Includes bibliographical references (p. 34-36).

Earth history field trip for high school science teachers : Vienna, Illinois, November 5, 1949 /

Gilbert O. Raasch, Conference director; Principal B.W. Hunsaker, Conference host.

Conservation school guide leaflet: Fairgrounds, Springfield, Illinois : Springfield area, Sangamon Co. : Springfield Quadrangle.

"Leader: George M. Wilson.

Pennsylvanian spores of Illinois and their use in correlation / by Robert M. Kosanke.

"Manuscript completed in August 1948."

Illinois natural resources : an industrial developmental asset /

Cover title.

Workmen's Compensation Board reports.

"Digest of decisions by Workmen's Compensation Board in selected cases, full text of court and board decisions under the Disability benefits law and Volunteer firemen's law, referee bulletins, interpretive bulletins and new rules and regulations."

The Lake Champlain drainage basin : recommended classifications and assignments of standards of quality and purity for designated waters of New York State /

Mode of access: Internet.

New York City waters survey series report; recommended classifications and assignments of standards of quality and purity for designated waters of New York State.

no. 1. Upper Bay; East Lower Bay.--no. 2. Atlantic Ocean.--no. 3. Arthur Kill van Kull.--no. 4. Lower East River.--no. 5. The Harlem River.--no. 6. West Lower Bay; Raritan Bay portion of Staten Island.--no. 7. Jamaica Bay drainage basin.

Genesee River drainage basin survey series report; recommended classifictions and assignments of standards of quality and purity for designated waters of New York State.

No. 2. Upper Genesee River drainage basin.

Municipal parks and playgrounds in Illinois. August, 1939.

Mode of access: Internet.