1 : 125,000 Somaliland Protectorate. Geological Survey. D.C.S. 1076, El Dur Elan

Volledige titel:1 : 125,000 Somaliland Protectorate. Geological Survey. D.C.S. 1076, El Dur Elan

Uitgever:[Surbiton] : Directorate of Colonial Surveys