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Problemi Vojvodine ;; Popović, Dušan J., Dr. ; 1
Popović, Dušan J. - 1925
Persistent link: https://www.econbiz.de/10011904641
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Socialisticeskata organizacija na truda i naucnotechniceskijat progres
Milčeva, Ginka Ivanova; Slavov Todorov, Todor - 1980
Persistent link: https://www.econbiz.de/10002488221
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Socializmǔt i naučno-techničeskijat progres
Angelov, Lal'o; Iliev, Ivan; Petrov, Ivan - In: Narodnostopanski archiv 34 (1981) 2, pp. 131-138
Persistent link: https://www.econbiz.de/10001834031