World War I. 1914-1918

Ern, Vladimir Frantsevich (1882-1917). Time Slavophiles. War, Germany, Europe and Russia. Moscow: type. t-va ID Sytin, 1915.

ГПИБ

Erzberger, Matthias (1875 - 1921). Germany and the Entente. Moscow: State Publishing House, 1923; Petrograd.

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