Walker's Groups in the Western Approaches.
By:  With a foreword by Sir Max Horton.
Publisher: Liverpool Daily Post & Echo
Published: 1948
Place of publication: [Liverpool]
Language: eng
Number of pages: 172
Subjects: Walker, Frederick John, 1896-1944.; World War, 1939-1945 -- Naval operations -- Submarine.; World War, 1939-1945 -- Atlantic Ocean.