Effect of phosphates on water treatment : phosphates in Illinois surface waters /

"Final report for the period June 15, 1955 to September 15, 1957 for American Association of Soap and Glycerine Producers."

Fire prevention in Illinois forests.

Issued originally as Forestry Circular no. 2.

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

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

Greenhouse pests; a manual of practice in the control of insects and other pests attacking ornamental plants and flowers grown under glass in Illinois.

Issued originally as Entomological series, circular 12.

Wood as a crop in Illinois.

Issued originally as Forestry circular no. 4.

Agstone used in Illinois in 1946,

Mode of access: Internet.

Agstone used in Illinois in 1945

Mode of access: Internet.

Agstone used in Illinois in 1944: Preliminary annual report,

Mode of access: Internet.

Oil and gas development in Illinois during 1950 /

"Reprinted from Statistics of oil and gas development and production covering 1950, A.I.M.E."

Questions set at the examinations of candidates for the certificate of certified public accountant in Illinois, 1907-1909.

Mode of access: Internet.

Heavy mineral ratios of Sangamon weathering profiles in Illinois /

Bibliography: p. 10.

Peach yellows in Illinois,

"Renumbered" as Natural History Survey. Circular 21.

Agstone used in Illinois in 1947

Mode of access: Internet.

Preliminary report on cost of producing beef in Illinois.

Mode of access: Internet.

Municipal parks and playgrounds in Illinois. August, 1939.

Mode of access: Internet.