| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Soil and Water Conservation for Productivity and Environmental Protection | 978-0-13-096807-4 (0-13-096807-2) | 2003 | Frederick R. Troeh · Roy L. Donahue |
| Soil and Water Conservation: Productivity and Environmental Protection | 978-0-13-622200-2 (0-13-622200-5) | 1998 | Frederick R. Troeh · Roy L. Donahue |
A. H. · A. Hobbs · Arthur H. · J. A. · J. Arthur · J. Arthur Hobbs Emeritus · J. H. · J. Hobbs