Submarines in the operations of the Russian Fleet on the Baltic Sea in 1914-1915.

Tomashevich, A. V.Submarines in the operations of the Russian Fleet on the Baltic Sea in 1914-1915./ A.V.Tomashevich, Cap.2 rank.- M.;L.: Voalmorizdat, 1939. -282 p., 11 separate.l.Il.: Il., Table .. -Bibliogr.In the text and substitution.Note..Electronic Source: PB