| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Community institutions in resource management: Agroforestry by Mobisquads in Ghana | 978-9966-41-022-1 (9966-41-022-8) | 1991 | |
| Ökologische Zerstörung in Afrika und alternative Strategien | 978-3-89473-224-0 (3-89473-224-5) | 1992 | Mohamed Suliman · Hans-Jürgen Harborth · Clément Dorm-Adzobu · Naomi Ole Kipuri · Peter Ay · Mohamed Osman · Kofi Diaw · Ulrisch Boeschen |
| Religious Beliefs and Environmental Protection: The Malshegu Sacred Grove in Northern Ghana | 978-9966-41-031-3 (9966-41-031-7) | 1991 | |