TY  - BOOK
AU  - GRANT Robert M.
TI  - U-boat hunters: code breakers, divers and the defeat of the u-boats, 1914-1918 
SN  - 9781591148890 (hbk.): 
PY  - 2004///
CY  - Annapolis, Maryland
PB  - Naval Inst Press, 
KW  - WORLD WAR, 1914-1918
KW  - NAVAL OPERATIONS, GERMAN
KW  - MILITARY INTELLIGENCE
KW  - GREAT BRITAIN
KW  - HISTORY
KW  - 20TH CENTURY
KW  - SUBMARINE WARFARE
N1  - Includes bibliographical references ( p. 162-167) and index
N2  - In this groundbreaking book, the author explains how the code breakers at the Admiralty's Room 40 were able to break into the German naval codes during the First World War
ER  -