Columbia subject headings:
Harvard subject headings:
Angola--History--20th century.
Angola--Politics and government--20th century.
Radio in politics--Angola--History--20th century.
Princeton subject headings:
Angola--History--20th century.
Angola--Politics and government--20th century.
Portuguese--Angola--History--20th century.
Radio broadcasting--Angola--History--20th century.
Radio in politics--Angola--History--20th century.