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  1. Flora Bulgarica : descriptio et enumeratio systematica plantarum vascularium in Principatu Bulgariae sponte nascentium. auctore J. Velenovský. Supplementum I /
    By: Velenovský, Josef,
    Publication info: Pragae :F. Rivnác,1898.
    Contributed by: Mertz Library, The New York Botanical Garden
    Subjects: Bulgaria  Floras  Plants  
    BHL Collections: New York Botanical Garden
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  2. Historia naturalis bulgarica.
    By: Bulgarska akademiia na naukite.
    Publication info: Sofiia :Bulgarska akademiia na naukite,c1989-
    Contributed by: American Museum of Natural History Library
    Subjects: Bulgaria  Natural history  Periodicals  
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  3. Izvestiia na Bulgarskoto entomologichno druzhestvo = Mitteilungen der Bulgarischen Entomologischen Gesellschaft in Sofia
    By: Bulgarsko entomologichno druzhestvo.
    Publication info: Sofiia :Chudozhnik,1924-1942.
    Contributed by: Smithsonian Libraries
    Subjects: Bulgaria  Bulgarsko entomologichno druzhestvo  Insects  Periodicals  
    BHL Collections: Field Museum Library
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  4. Izvestiia na Tsarskitia prirodonauchni instituti v Sofiia = Mitteilungen aus den Konigl. naturwissenschaftlichen Instituten in Sofia, Bulgarien = Bulletin des Institutions royales d'histoire naturelle á Sofia, Bulgarie.
    By: Tsarskitie prirodonauchni instituti (Sofiia, Bulgaria)
    Publication info: Sofiia :Pechatnitsa P. Glushkov,1928-
    Contributed by: Smithsonian Libraries
    Subjects: Bulgaria  Natural history  Periodicals  Tsarskitie prirodonauchni instituti (Sofiia, Bulga  
    BHL Collections: Smithsonian Libraries
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