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221Published 1986### CRL customization ### ?> ### Add publisher and desc details ### ?>Plovdiv : Universitet, 1986.1 v. : ill. ; 21 cm.
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222Published 1990### CRL customization ### ?> ### Add publisher and desc details ### ?>Plovdiv : Universitet, 1990-v. ; 22 cm.
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223Published 1964### CRL customization ### ?> ### Add publisher and desc details ### ?>Sofi︠i︡a : Izd-vo na Bŭlgarskata akademi︠i︡a na naukite, 1964.1 v. : ill. ; 24 cm.
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224Published 1986### CRL customization ### ?> ### Add publisher and desc details ### ?>Sofi︠i︡a : Institut, -1986.v. : ill. ; 21 cm.
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225Sofi︠i︡a : Izd-vo na Bŭlgarskata rabotnicheska parti︠i︡a (komunisti),v. : ill. ; 23 cm.Issued also on microfilm by Narodna biblioteka "Kirill i Metodiĭ."
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226Sofi︠i︡a : Pechatni︠t︡sa Khudozhnik,v. ; 25 cm.Also available on microfilm from New York Public Library.
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227Published 1954### CRL customization ### ?> ### Add publisher and desc details ### ?>Sofi︠i︡a : "Nauka i izkustvo", 1954-1964.11 v. : ill. ; 23 cm.
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228Published 1910### CRL customization ### ?> ### Add publisher and desc details ### ?>Sofii⁻Ła⁻Ł : Druzhestvo, 1910-1920.7 v. : ill. ; 27 cm.
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229Sofi︠i︡a : Izd. na Instituta za ra︠t︡sionaliza︠t︡si︠i︡a,
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230Published 1987### CRL customization ### ?> ### Add publisher and desc details ### ?>Sofi︠i︡a : Institut, 1987-v. : ill. ; 21 cm.
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231[Sofi︠i︡a] : Dŭrzh. izdatelstvo "Nauka i izkustvo",v. : ill. ; 23 cm.
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232Published 1987### CRL customization ### ?> ### Add publisher and desc details ### ?>Plovdiv : Universitet, 1987-1988.2 v. : ill. ; 21 cm.
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233Published 1970### CRL customization ### ?> ### Add publisher and desc details ### ?>Sofi︠i︡a : "G. Dimitrov", 1970-v. : ill. ; 29 cm.
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234Plovdiv : Izd-vo Khristo G. Danov,v. : ill. ; 24 cm.
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235Published 1979### CRL customization ### ?> ### Add publisher and desc details ### ?>Sofi︠i︡a : Universitetska pechatni︠t︡sa, 1979-v. : ill. ; 23 cm.
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236Sofi︠i︡a : Pechatni︠t︡sa Knipegraf,v. : ill. ; 25 cm.
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237Published 1964### CRL customization ### ?> ### Add publisher and desc details ### ?>Sofi︠i︡a : Izd-vo na Bŭlgarskata akademi︠i︡a na naukite, 1964.1 v. : ill. ; 24 cm.
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238Sofi︠i︡a, Izd-vo na Bŭlgarscata akademi︠i︡a na naukite.16 v. ill.
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239Sofi︠i︡a : Institut,v. : ill.
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240Published 1977### CRL customization ### ?> ### Add publisher and desc details ### ?>Sofi︠i︡a : Universitetska pechatni︠t︡sa, 1977-1979.2 v. : ill. ; 23 cm.