de Hartyani M. P. S. Squire: The Third Department. The Establishment and Practices of the Political Police in the Russia of Nicholas I. Cambridge, At the University Press, 1968. viii + 272 s. 8 pi. 2 kort. 70 sh. ht [Internet]. 1. januar 1970 [henvist 6. december 2025];12. Tilgængelig hos: https://tidsskrift.dk/historisktidsskrift/article/view/50998