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Title:Reports of Colonel Filippov, Russian military agent in Constantinople, about military preparations in European Turkey and the embarkation of troops, and about the strengthening of West European influence in Turkey. Information about fortifications in the Bosporus and the Dardanelles and military geographical notes about Turkey composed by Colonel Veniukov in 1874. Enclosed is a map of the surroundings of Constantinople and a map of fortifications in the Bosporus.