Documents on German foreign policy, 1918-1945 : from the archives of the German Foreign Ministry. Series D, Vol. 10, 1937-1945 The war years June 23 - Agust 31, 1940. - Washington : Government Printing Office, 1957. - 615 p. ; 24 cm. Subjects--Index Terms: Germany -- Foreign relations -- 1918-1933 -- Sources. Germany -- Foreign Relations -- 1933-1945 -- Sources.