C. G. · C. Gifford · R. C.
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Agricultural Engineering in Development: Mechanization Strategy Formulation: Concepts and Principles | 978-92-5-103175-9 (92-5-103175-4) | 1992 |
| Agricultural Mechanization in Development: Guidelines for Strategy Formulation | 978-92-5-101073-0 (92-5-101073-0) | 1982 |