1. Namibia's commercial farming sector on the eve of independence;Adams,1990
2. Charles John Andersson, trade and politics in Central Namibia 1860–1864;Andersson,1989
3. Lake Ngami, or, explorations and discoveries during four years' wanderings in the wilds of south western Africa;Andersson,1856
4. Mechanism of shrubland expansion: land use, climate or CO2?;Archer;Clim Change,1995
5. Time, complexity, and historical ecology;Balée,2006