U-Booty pierwszej wojny swiatowej

By Perepeczko, Andrzej
(First World War U-Boats)
2000, Wydawnictwo Lampart
ISBN 838677651X
Hardcover, 469 pages, photos, maps, silhouettes of the sunken warships, tables
book is in Polish language

Descripton: Haphazard, but nevertheless pioneer in Poland operational history of the Kaiser U-Boats during WW1.