The invisible weapons
By: by J. C. Silber; with a foreword by Major-General Edward Gleichen
Publisher: Hutchinson
Published: 1932
Place of publication: London
Language: eng
Number of pages: 288
Subjects: World War, 1914-1918; Secret service; Censorship; Propaganda
Notes: The story of a German secret service agent who was employed by the British Postal censorship during the war.