1. IOR/R/20/G/188 Reference (shelfmark): IOR/R/20/G/188 Title: South-west Arabia (The Yemen and the Aden Protectorate) Transliteration of names Third edition [revised by Lt-Col M C Lake] System-RGS II London: Colonial Office, Oct 1941 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1941 Extent: 1 volume