| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Campagne Intensive de Vulgarisation: Une methode participative de vulgarisation agricole | 978-92-5-203570-1 (92-5-203570-2) | 1997 | |
| Strategic Extension Campaign: Participatory-Oriented Method of Agricultural Extension | 978-92-5-103570-2 (92-5-103570-9) | 1994 | |
| The role of Audio Cassette Communication in rural development | 978-9971-905-07-1 (9971-905-07-8) | 1983 | Royal D Colle |