Great Britain. War Office. Intelligence Division. I.D.W.O. no. 1522a. Great Britain. War Office. General Staff. Geographical Section. G.S.G.S. no. 1522a. Relief shown by form lines and spot heights. Some sheets from this set were revised and issued by War Office. Geographical Section. General Staff, published as G.S.G.S. no. 1522, 1522a. Series covers Mesopotamia and eastern Anatolian parts of Ottoman Empire. Compiled from Surveys & Reconnaissances by the British Army & from Surveys by Sir. W. Willcocks 1909-10. With glossary. Set complete, see index.
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