Forest trees of Illinois :
how to know them : a pocket manual describing their most important characteristics /
revised by George D. Fuller and E. E. Nuuttila.

APA Citation

Illinois. Division of Forestry., Nuuttila, E. E., Fuller, G. D. (George Damon). (1955). Forest trees of Illinois: how to know them : a pocket manual describing their most important characteristics. Springfield: Dept. of Conservation, Division of Forestry.

MLA Citation

Illinois. Division of Forestry, E. E Nuuttila, and George D. (George Damon) Fuller. Forest Trees of Illinois: How to Know Them : a Pocket Manual Describing Their Most Important Characteristics. Springfield: Dept. of Conservation, Division of Forestry, 1955.