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Die Aden-Grenze in der Südarabienfrage : 1900 - 1967
Plass, Jens Barthold, (1967)
The politics of stratification : a study of political change in a South Arabian town
Bujra, Abdalla, (1971)
Report of the Sub-Committee on Aden : United Nations ; Special Committee on the Situation with Regard to the Implementation of the Declaration on the Granting of Independence to Colonial countries and peoples
(1963)