| Publication Type: | Book |
| Year of Publication: | 1983 |
| Authors: | L. L. Pechuman, Webb, D. W., Teskey, H. J. |
| Series Title: | Bulletin / Illinois Natural History Survey v. 33, art. 1 |
| Publisher: | State of Illinois, Dept. of Energy and Natural Resources, Natural History Survey Division |
| City: | Champaign : |