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1Published 1984### CRL customization ### ?> ### Add publisher and desc details ### ?>Plovdiv : Universitet, 1984-v. : ill. ; 21 cm.
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2Published 1975### CRL customization ### ?> ### Add publisher and desc details ### ?>Sofi︠i︡a : Izd-vo na Bŭlgarskata akademi︠i︡a na naukite, 1975-1980.10 v. : ill. ; 24 cm.
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3Published 1960### CRL customization ### ?> ### Add publisher and desc details ### ?>Sofi︠i︡a : Izd. na Bŭlgarskata akademi︠i︡a na naukite, -1960.v. : ill. ; 24 cm.
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4Sofi︠i︡a.v. : ill., maps ; 35 cm.
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5Sofi︠i︡a : [s.n.],v. : ill.
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6Published 1985### CRL customization ### ?> ### Add publisher and desc details ### ?>Sofi︠i︡a : Izdatelstvo na Bŭlgarskata akademi︠i︡a na naukite, 1985-1987.3 v. : ill. ; 24 cm.
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7Sofi︠i︡a : Izd-vo na Bŭlgarskata akademi︠i︡a na naukite,v. : ill. ; 24 cm.
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8Sofi︠i︡a, Izd. na Bŭlgarskata akademi︠i︡a na naukite.v. 26 cm.
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9Sofi︠i︡a.
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10Sofi︠i︡a : Ministerstvo na lekata i khranitelnata promishlenost,v. : ill. ; 29 cm.
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11Sofi︠i︡a : Niproruda,v. : ill. ; 21 cm.
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12Sofi︠i︡a : Pechatnitsa "Todor Dimitrov",v. : ill.
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13Published 1996### CRL customization ### ?> ### Add publisher and desc details ### ?>Sofi︠i︡a : Universitet, 1996-v. : ill. ; 23 cm.
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14Published 1968### CRL customization ### ?> ### Add publisher and desc details ### ?>[Sofi︠i︡a : Redak︠t︡si︠i︡a], 1968-v. : ill.
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15Published 1967### CRL customization ### ?> ### Add publisher and desc details ### ?>Sofi︠i︡a : Dŭrzhavno izdatelstvo "Tekhnika", 1967-1973.7 v. : ill. ; 22 cm.
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16Published 1954### CRL customization ### ?> ### Add publisher and desc details ### ?>Sofi︠i︡a : "Nauka i izkustvo", 1954-1964.11 v. : ill. ; 23 cm.
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17Published 1975### CRL customization ### ?> ### Add publisher and desc details ### ?>Sofi︠i︡a, Tekhnika. 1975-v. 22 cm.
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18Plovdiv : Plovdivsko universitetsko izdatelstvo,v. : ill. ; 22 cm.
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19Published 1960### CRL customization ### ?> ### Add publisher and desc details ### ?>Sofi︠i︡a : Minno delo i metalurgi︠i︡a, 1960-1963.4 v. : ill. ; 31 cm.
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20Sofi︠i︡a : Medi︠t︡sina i fizkultura,v. : ill.