ANGULA, Helmut Kangulohi. Tracing the history of the San, Namibia's first inhabitants / Helmut Angula. - London ; Lusaka, 1988.
UNITED NATIONS INSTITUTE FOR NAMIBIA (UNIN)
UNITED NATIONS INSTITUTE FOR NAMIBIA (UNIN)
http://192.168.151.11//angula-helmut-kangulohi-tracing-history-of-san-namibias-first-inhabitants-helmut-angula-london-lusaka-1988
PA 4/1/1/526(NAM 968.8 Int)