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

v.12:no.4(1956)

Chesterian (Upper Mississippian) Gastropoda of the Illinois basin / [by] Myint Lwein Thein -- and Matthew H. Nitecki --.

v.34(1974)

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

v.12:no.1(1956)

A new hydrozoan from the Pennsylvanian of Illinois / [by] Matthew H. Nitecki -- and Eugene S. Richardson, Jr. --

v.30:no.1(1972)

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)

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

v.12:no.3(1956)

Arctoid genetic characters as related to the genus Parictis / [by] John Clark -- and Thomas E. Guensburg, University of Illinois. [Patricia M. Williams -- editor.]

v.26:no.1(1972)

New information on the Holocystites fauna (Diploporita) of the Middle Silurian of Wisconsin, Illinois, and Indiana / Terrence J. Frest --, Donald G. Mikulic -- and Christopher R. C. Paul --.

v.35:no.6(1977)

Paraparchites mazonensis n. sp. (Ostracoda) from Middle Pennsylvanian ironstone concretions of Illinois / I. G. Sohn --.

v.37:no.2(1977)

Sedimentary structures from the Carbondale Formation (Middle Pennsylvanian) of Northern Illinois / Charles W. Shabica --.

v.33:no.29(1978)

Transactions of the Department of Agriculture of the State of Illinois with reports from county and district agricultural organizations for the year ...

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Illinois biological monographs.

v. 6 (1920)

Illinois biological monographs.

v. 2 (1915-1916)

Illinois biological monographs.

v. 3 (1916-1917)

Transactions of the Illinois State Horticultural Society for ...

n.s. v. 22