Brudte segl
Subtitle: spionage og censur i enevældens Danmark
By: Sune Christian Pedersen
Edition: 1. udgave
Series: Skrifter fra Post & Tele Museum -- 7; Skrifter fra Post & Tele Museum -- 7.
Publisher: Post & Tele Museum
Published: 2008
Place of publication: København
Language: dan
Number of pages: 462
ISBN-13: 9788790768270
Subjects: Postal service; Censorship; Espionage; History
Notes: Includes bibliographical references (p. 435-449) and index.

Summary in English.