Kaiserliche Marine U-Boote 1914-1918

Dictionnaire biographique des commandants de la marine imperiale allemande

By Dufeil, Yves
2011, Hstomar Publications
book is in French language

Descripton: Career information on German U-boat Commanders of WWI. Possible to read online at http://fr.calameo.com/read/000802552841bc1ae847e.