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1Publicado 1960Sofii︠a︡ : Izd-vo na Bŭlgarskata akademii︠a︡ na naukite, 1960-1966.8 v. : ill., ports., maps (part fold.) ; 25 cm.“...Izd-vo na Bŭlgarskata akademii︠a︡ na naukite,...”
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2Publicado 1967Sofii︠a︡ : Izd-vo na Bŭlgarskata akademii︠a︡ na naukite, 1967-1968.2 v. : ill. ; 24 cm.“...Izd-vo na Bŭlgarskata akademii︠a︡ na naukite,...”