Hans Rettenbacher · Hans Rodionoff
| title | media type | ISBN-13 | year of publication |
|---|---|---|---|
| Farming Systems in the Tropics | Hardcover | 978-0-19-859481-9 | 1980 |
| Farming Systems in the Tropics | Paperback | 978-0-19-859482-6 | 1980 |
| Farming Systems in the Tropics | Hardcover | 978-0-19-859458-1 | 1977 |
| Farming Systems in the Tropics | Paperback | 978-0-19-859461-1 | 1977 |
| Farming Systems in the Tropics | Hardcover | 978-0-19-859426-0 | 1971 |
| Innovation Policy for Small Farmers in the Tropics: The Economics of Technical Innovations for Agricultural Development | " | 978-0-19-859487-1 | 1985 |