Die deutschen U-Boote in ihrer Kriegführung 1914 - 1918

Volume I : Kriegsanfang bis Februar 1915

By Gayer, Albert
(The Warfare of the German U-boats 1914 - 1918: Outbreak of war to February 1915)
1920, Mittler & Sohn Verlag
book is in German language

Descripton: This book covers only the campaign against enemy warships. For coverage of the war on trade, see Spindler, Arno.