| title | ISBN-13 | year of publication | |
|---|---|---|---|
| Sahara and Sudan: Chad Basin and Bagirmi Vol 3 | 978-0-905838-47-2 | 1988 | |
| Sahara and Sudan: Kawar, Bornu, Kanem, Borku, Ennedi Vol 2 | 978-0-903983-96-9 | 1980 | |
| Sahara and Sudan: The Chad Basin and Bagirmi | 978-0-391-03415-0 | 1987 | |
| Sahara and Sudan Volume 1: Tripoli and Fezzan, Tibesti or Tu | 978-0-06-495075-6 | 1974 | |
| Tibesti. Die Entdeckung der Riesenkrater und die Erstdurchquerung des Sudan 1868 - 1874. | 978-3-7711-0305-7 | 1978 |
C Hurst & Co Publishers Ltd · HarperCollins · Humanities Pr