Underground water resources reports Donald Gear, Aden, Mar-Jul 1961 typ No 8 The underground water resources of the Aden Arab Protectorate and their development, 6 Jul 1961
United Nations conference on the application of science and technology for the benefit of the less developed areas, Geneva, 1963. Some considerations for the design and construction of irrigation headworks in the South Arabian wadis R F Camacho and T K Bateman, Irrigation Branch, Dept of Agriculture Aden, Oct 1962
Department of Technical Co-operation. Report on a visit to the Federation of South Arabia and the Eastern Aden Protectorate D S Ferguson, Adviser on land drainage and irrigation to the Secretary of State Aden, Jan/Feb 1963 typ
A medical survey of the Western Aden Protectorate, 1939-1940 P W R Petrie and K S Seal London: Colonial Office, Middle East No 66, Dec 1943 typ For the Use of the Colonial Office