Title: Taĭnata voĭna ili letopis za d-r Aleksandŭr Peev i general Nikifor Nikiforov
Subjects: Biography, History, Secret service, Spies, Underground movements, World War, 1939-1945
Places: Bulgaria, Bulgarian Espionage
People: Aleksandŭr Kostadinov Peev, Nikifor Nikiforov general
Time periods: 1941-1944