Richard Steffen
| Department | Plant, Soil and General Agriculture |
| Degree | Ph.D. |
| Address | 4415 Southern Illinois University-Carbondale |
| City | Carbondale |
| State | IL |
| Country | US |
| Zip Code | 62901-4415 |
| Phone | 618-453-6970 |
| Fax | 618-453-7457 |
| plss@siu.edu | |
| Website | http://www.siuc.edu/~psas/index.htm |