Illinois petroleum.

At head of title: State of Illinois, Dept. of Registration and Education.

Guide leaflet, geological science field trip, Lena area : Stephenson and Jo Daviess Counties, Lena, Elizabeth and Galena quadrangles /

September 9, 1961.

Attenuation of water-soluble polychlorinated biphenyls by earth materials /

Mode of access: Internet.

Monograph.

Mode of access: Internet.

Earth science field trip, guide leaflet : Metropolis area : Massac, Pope and Johnson Counties : Paducah, Brownfield, Vienna and La Center Quadrangles.

"April 11, 1959."

Geology and mineral resources of the Beardstown, Glasford, Havana, and Vermont quadrangles /

Includes bibliographical references and index.

Geology and mineral resources of the Joliet quadrangle ... /

Reprinted from Illinois. State geological survey. Bulletin no. 51.

Harrisburg area : Harrisburg and Brownfield Quadrangles /

"April 7, 1951."

Geology and geography of the Galena and Elizabeth quadrangles,

Includes bibliographical references and index.

Chester area : Randolph County /

"April 8, 1950."

Quincy area : Adams County : Quincy and Mendon Quadrangles /

"October 21, 1950."