Columbia subject headings:
Germany--Colonies--Africa.
Namibia--Boundaries.
Namibia--History--1884-1915.
Tanzania--Boundaries.
Tanzania--Colonization.
Harvard subject headings:
Africa--Boundaries.
Africa--Historical geography.
Germany--Colonies--Africa--History.
Princeton subject headings:
Africa--Boundaries.
Africa--Historical geography.
Germany--Colonies--Africa--History.