Title: Bŭlgarski trit︠s︡vet po Dunav : stranit︠s︡i za bŭlgarskoto rechno koraboplavane /
Authors: Doĭkov, Vasil.; Radoev, Ĭordan.; Kazakov, Ĭordan.
Publisher: Kn-vo "Georgi Bakalov",
Year: 1985
Subjects: Inland water transportation Bulgaria History.; Shipping Danube River History.