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C. R. Acad. Bulg. Sci.
Doklady Bolgarskoi Akademiya Nauk. Comptes Rendus de l'Académie Bulgare des Sciences. Bulgarian Academy of Sciences - BAS (Bălgarska Akademiya na Naukite - BAN), Sofia. Bulgarian, English. [1 vol. (= 12 issues) a year]
Journal, ISSN 1310-1331
http://www.proceedings.bas.bg/
years 1948 - 1994: ISSN 0366-8681; years 1995 - 2003: ISSN 0861-1459; since 2003: ISSN 1310-1331
Library shelfmarks: GOE: 8 Z NAT. 2719; TIB: ZA 1044; CWI: M00418-D