WRAGG David World sea power guide / David Wragg. - Barnsley : Pen & Sword, 2012. - vi, 270 pages : illustrations ; 24 cm. Includes bibliographical references. ISBN: 9781848848795 (hbk.) : 25.00 GBP Subjects--Topical Terms: NAVIESWARSHIPSSEA-POWERWARSHIPS -- PICTORIAL WORKS