Flora of Illinois, containing keys for identification of flowering plants and ferns.

no.7

Flora of Illinois, containing keys for the identification of the flowering plants and ferns, by George Neville Jones ...

no.2

New agnathous fishes from the Pennsylvanian of Illinois / David Bardack -- and Eugene S. Richardson, Jr. --

v.33:no.26(1977)

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

39