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By: Tsarskitie prirodonauchni instituti (Sofiia, Bulgaria)Edition:Publication info: Sofiia Pechatnitsa P. Glushkov 1928-Volume: kn. 1-2 (1928-29)Series:Holding Institution: Smithsonian Libraries and ArchivesSubjects: Bulgaria Natural history Periodicals Tsarskitie prirodonauchni instituti (Sofiia, BulgaBHL Collections: