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Iz Bŭlgarija : putevoditel
Deliradev, Pavel; Velkov, Ivan - 1946
Persistent link: https://www.econbiz.de/10002335219
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Rila : Geogr. očerk
Deliradev, Pavel - 1956
Persistent link: https://www.econbiz.de/10002335220
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Filosofsko-metodologičeski problemi na izgraždaneto na razvito socialističesko obštestvo
Vǔlov, Todor (contributor) - 1975
Persistent link: https://www.econbiz.de/10003139982
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Vŭprosi na razvitieto na elektrifikacijata v NR Bŭlgarija : Bŭlg. Akad. na naukite. Ikonom. Inst.
Šapkarev, Petǔr - 1963
Persistent link: https://www.econbiz.de/10002330382
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Ikonomičesko rajonirane na NR Bŭlgarija
Zachariev, Ivan (contributor);  … - 1963
Persistent link: https://www.econbiz.de/10014386894