TY  - BOOK
AU  - Barber,Nicola
TI  - Who broke the wartime codes?
T2  - Primary source detectives
SN  - 9781432996062 (hb) :
AV  - D810.C88 B36 2014
U1  - 940.54/8641 23
PY  - 2014///]
CY  - Chicago, Illinois
PB  - Heinemann Library
KW  - World War, 1939-1945
KW  - Cryptography
KW  - Juvenile literature
KW  - Electronic intelligence
KW  - United States
KW  - Great Britain
KW  - Cryptographers
KW  - History
KW  - 20th century
N1  - Includes bibliographical references (pages 62-63) and index; A daring raid -- What were wartime codes? -- Who wanted to break them? -- What sort of people were they? -- What did they do to break the codes? -- Who used the information they found? -- What happened to the code-breakers after the war? -- Why was their work significant?; Junior Library Guild; 11-13; 6-8; 1130L; Lexile; Accelerated Reader; MG; 8.0; 2.0; 166989 EN.; Reading Counts; 6-8; 9.7; 6; Q64136
N2  - This account of the Allied efforts to decode Axis messages--and keep the success of their efforts secret--describes the men and women behind the scenes, as well as the institutions they served, and the early computers devised for the purpose
ER  -