[054-05]New Species of Nearctic Orthotrichia (Hydroptilidae, Trichoptera)
Kingsolver, John M. and Ross, Herbert H. New Species of Nearctic Orthotrichia (Hydroptilidae, Trichoptera) 054-05-print
[054-04]The Saint Louis Tornadoes of February 10, 1959
Brooks, Edward M. The Saint Louis Tornadoes of February 10, 1959 054-04-print
[054-03]Abbot Formation (Pennsylvanian) in Southern Illinois
Desborough, George A. Abbot Formation (Pennsylvanian) in Southern Illinois 054-03-print
[054-02]N-(2-Aminoethyl)Succiniamic Acid
Yohe, G.R. and Harris, J.M. N-(2-Aminoethyl)Succiniamic Acid 054-02-print
[054-01]Presidential Address Natural or Scientific Areas: An Illinois Resource
Evers, Robert A. Presidential Address Natural or Scientific Areas: An Illinois Resource 054-01-print