Classification Scheme of the Special Subject Collection → Regions, Countries and Peoples → Particular Regions → Arabian Peninsula → Yemen → History, Politics

• Developments of democracy in Yemen Professors World Peace Academy - Middle East (Ed.) Berlin : Schwarz, c 1994

• Die Oppositionsbewegung im Jemen zur Zeit Imām Yaḥyās und der Putsch von 1948 Ṣāʾidī, Aḥmad Qāyid ; Ḥamīd-ad-Dīn Yaḥyā Ibn-Muḥammad <Jemen, König> Berlin : Baalbek Verlag, 1981