International relations in the Epoch of Imperialism

International relations in the era of imperialism: documents from the archives of the royal and temporary governments 1878-1917./ CommissionWith the CEC of the USSR by ed.documents of the era of imperialism under the chairmanship of M.N.Pokrovsky.Series 3, 1914-1917.- M.;L.: State.Social-eco.Publishing house, 1931-1938.-.I. Pokrovsky, M.N.Electronic Source: PB