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201Udgivet 1969### CRL customization ### ?> ### Add publisher and desc details ### ?>Sofii︠a︡ : Izd-vo na Bŭlgarska akademii︠a︡ na naukite, 1969-1974.6 v. : ill., maps (some folded) ; 24 cm.
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202Plovdiv : Plovdivsko universitetsko izdatelstvo,v. : ill. ; 22 cm.
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203Udgivet 1967### CRL customization ### ?> ### Add publisher and desc details ### ?>Sofi︠i︡a : Dŭrzhavno izdatelstvo "Tekhnika", 1967-1973.7 v. : ill. ; 22 cm.
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204Sofi︠i︡a, Ministerstvo na zemedelieto i khranitelnata promishlenost.v. ill.
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205Udgivet 1972### CRL customization ### ?> ### Add publisher and desc details ### ?>Sofi︠i︡a : Izd-vo na Bŭlgarskata akademi︠i︡a na naukite, 1972-1974.3 v. : ill., ports.
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206Udgivet 1965### CRL customization ### ?> ### Add publisher and desc details ### ?>Sofi︠i︡a : Dŭrzhavno izdatelstvo "Tekhnika", 1965.1 v. : ill. ; 23 cm.
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207Udgivet 1961### CRL customization ### ?> ### Add publisher and desc details ### ?>Sofi︠i︡a : Ra︠t︡sionaliza︠t︡si︠i︡a i standartiza︠t︡si︠i︡a, 1961-
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208Sofi︠i︡a : Pechatni︠t︡sa "Poligrafi︠i︡a",v. : ill. ; 25 cm.
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209Sofi︠i︡a : Prezidium,v. : ill. ; 26 cm.
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210[Sofi︠i︡a : Na︠t︡sionalen kom-t za zashtita na mira v Bŭlgari︠i︡a,v. : ill. ; 20 cm.
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211Udgivet 1954### CRL customization ### ?> ### Add publisher and desc details ### ?>Sofi︠i︡a : Dŭrzh. izd-vo "Nauka i izkustvo", 1954-1965.11 v. : ill. ; 22 cm.
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212Sofi︠i︡a : Glavna direk︠t︡si︠i︡a na poshtit︠i︡e i telegrafit︠i︡e,v.
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213Udgivet 1964### CRL customization ### ?> ### Add publisher and desc details ### ?>Sofi︠i︡a : Dŭrzhavno izd-vo "Nauka i izkustvo", 1964-1979.14 v. : ill., maps (partly folded) ; 23 cm.
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214Sofi︠i︡a : [s.n.,v. : ill. ; 29 cm.
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215Sofi︠i︡a, Dŭrzh. izd-vo [etc.]v. ill. 24 cm.
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216Udgivet 1970### CRL customization ### ?> ### Add publisher and desc details ### ?>Sofi︠i︡a : Tekhnika, 1970-v. : ill.
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217Udgivet 1984### CRL customization ### ?> ### Add publisher and desc details ### ?>Plovdiv : Universitet, 1984-v. ; 21 cm.
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218Udgivet 1950### CRL customization ### ?> ### Add publisher and desc details ### ?>Sofii ︠ a ︡ : Akademii ︠ a ︡ , 1950-1995v. : ill. ; 27-31 cm.
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219Udgivet 1984### CRL customization ### ?> ### Add publisher and desc details ### ?>Plovdiv : Universitet, 1984-1985.2 v. : ill. ; 21 cm.
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220Udgivet 1976### CRL customization ### ?> ### Add publisher and desc details ### ?>Sofi︠i︡a : "Tekhnika", 1976-1978.2 v. : ill. ; 22 cm.