Bonn; Windhoek: Deutsche Stiftung für Internationale Entwicklung (DSE);Republic of Namibia, Ministry of Basic Education and Culture;University of Namibia (1995), 191 pp.
Bonn and Windheok: German Foundation for International Development (DSE);Education, Science and Documentation Centre (ZED);Ministry of Education and Culture Windhoek, Namibia;University of Namibia (1993), 250 pp.