Stratigraphic correlations of the Seelyville, Dekoven, and Davis coals of Illinois, Indiana, and western Kentucky /

Errata slip inserted.

Toward the development of a county employment projection system for the State of Illinois : a report to the Illinois Environmental Protection Agency, Division of Air Pollution Control /

Cover title: Towards the development of a county employment projection system for the state of Illinois.

Vascular plants of Illinois,

Bibliography: p. 537-556.

Chemical and biological surveys of the waters of Illinois.

Issued, 1917- as Bulletin no. 15 of the Division of the State Water Surveys, Dept. of Registration and Education.

A survey of joint-labor management cooperation committees in unionized private enterprises in the state of Illinois, 1979 /

Prepared for submission to the U.S. Department of Labor in accordance with Contract NP8AC009 issued by the National Center for Productivity and Quality of Working Life.

Principal soil association areas of Illinois.

Mimeographed.

Oration of William J. Onahan, LL. D., of Chicago, Illinois : delivered at the thirty-second annual commencement of the University of Notre Dame, Indiana, Wednesday, June 21, 1876.

Mode of access: Internet.

On some collections of fishes made in the Kankakee and Illinois Rivers [by] O. P. Hay.

v.1:no.4(1896)

Pennsylvanian invertebrates of the Mazon Creek area, Illinois / Eugene S. Richardson, Jr. --

v.12:no.2(1956)

New species of Leptocera Olivier in the burrows of the pocket gopher, Geomys Bursarius Illinoensis Komarek and Spencer, found in Illinois (Diptera: Sphaeroceridae) [by] O.W. Richards.

v.44:no.19(1964)

Pennsylvanian invertebrates of the Mazon Creek area, Illinois. Trilobitomorpha arthropleurida, Eugene S. Richardson, Jr. --

v.12:no.5(1959)

Pennsylvanian invertebrates of the Mazon Creek area, Illinois : Eurypterida / Erik N. Kjellesvig-Waering --

v.12:no.6(1963)

Pennsylvanian invertebrates of the Mazon Creek area, Illinois / Eugene S. Richardson, Jr. --

v.12:no.4(1956)

Pennsylvanian invertebrates of the Mazon Creek area, Illinois / Eugene S. Richardson, Jr. --

v.12:no.1(1956)

Pennsylvanian invertebrates of the Mazon Creek area, Illinois: the Essex fauna and medusae / Ralph Gordon Johnson -- and Eugene S. Richardson, Jr. --

v.12:no.7(1968)