1. Espionage and secrecy : the Official Secrets Acts 1911-1989 of the United Kingdom /: the Official Secrets Acts 1911-1989 of the United Kingdom. (2016) Authors: Thomas, Rosamund M Record Type: Book Extent: 1 online resource, illustrations (black and white) View Content: Available online (eLD content is only available in our Reading Rooms) ↗