Title: Razvitie na vodnii︠a︡ transport v Bŭlgarii︠a︡, 1878-1947 g.
Subjects: Sources, Catalogs, Publishers Catalogs, Bulgaria. Glavno upravlenie na arkhivite, Bibliography, Bulgaria, Shipping, History, Publishers' catalogs
Places: Bulgaria
Time periods: 20th century, 19th century