| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Sustainable Development in the Sahel: Proceedings of the 4th Sahel Workshop, 6-8 January 1992 | 978-87-87600-38-5 (87-87600-38-2) | 1992 |
| The Vegetation of Delta du Saloum National Park, Senegal | 978-87-87600-42-2 (87-87600-42-0) | 1994 |