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Rees, Jan van (contributor) - Esomar - 1974

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Krǔstev, Angel - In: Izvestija / Visš Institut za Narodno Stopanstvo … (1966) 2, pp. 78-92

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Dimitrov, Boris - 1979

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Jončev, Cvetan Konstantinov - 1972

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Veličkova, Nigreta - In: Statistika : dvumesečno spisanie ; organ na … 17 (1970) 3, pp. 3-17

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Veličkova, Nigreta - In: Ikonomičeska misăl 10 (1965) 10, pp. 42-52

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Mutafčiev, Ljudmil - In: Trudove na Visšija Ikonomičeski Institut "Karl Marks" (1970) 2, pp. 321-370

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Chadžiiliev, Ilija Draganov - 1964

Persistent link: https://www.econbiz.de/10002331891

Stanev, L.; Svirkov, V.; Aleksandrov, K. - 1972

Persistent link: https://www.econbiz.de/10003124777

Stanev, Ljubomir K.; Ivanov, Georgi - In: Izvestija / Visš Institut za Narodno Stopanstvo … (1967) 2, pp. 31-44

Persistent link: https://www.econbiz.de/10002876999