| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Nuer View of Biological Life: Nature & Sexuality in the Experience of the Ethiopian Nuer ) | 978-91-22-01283-2 (91-22-01283-4) | 1989 |
| The process of land nationalization in Ethiopia: Land nationalization and the peasants | 978-91-40-04803-5 (91-40-04803-9) | 1982 |