| Publication Type: | Journal Article |
| Year of Publication: | 1981 |
| Authors: | M. E. Irwin, Lyneborg L. |
| Journal: | Illinois Natural History Bulletin (1980) |
| Volume: | 32 |
| Pagination: | 193–277 |
| Publication Type: | Journal Article |
| Year of Publication: | 1981 |
| Authors: | M. E. Irwin, Lyneborg L. |
| Journal: | Illinois Natural History Bulletin (1980) |
| Volume: | 32 |
| Pagination: | 193–277 |