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Zimmerman, David, 1959-
Top secret exchange : the Tizard mission and the scientific war / David Zimmerman.
Tizard, Henry Thomas, Sir, 1885-1959.
World War, 1939-1945 -- Technology.
World War, 1939-1945 -- Science.
Technical assistance, British -- United States.
Technical assistance, American -- Great Britain.
World War, 1939-1945 -- Military intelligence -- Great Britain.
World War, 1939-1945 -- Military intelligence -- United States.
World War, 1939-1945 -- Military intelligence -- Canada.
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