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Aktualno săstojanie na informacionnata sistema na zadălžitelnoto pensionno i zdravno osigurjavane v Bălgarija
Toševa, Ekaterina; Čipeva, Sonja - In: Statistika / Nacionalen Statističeski Institut 55 (2003) 5/6, pp. 50-62
Persistent link: https://www.econbiz.de/10002174806
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Izsledvane na socialʹno osigurenite lica v Republika Bălgarija
Božikov, Petko - In: Statistika / Nacionalen Statističeski Institut 37 (1995) 3, pp. 20-33
Persistent link: https://www.econbiz.de/10001203834
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Dochodi, žiznen standart i socialno popomagane v Bălgarija
Futekov, Radi - In: Statistika / Nacionalen Statističeski Institut 54 (2002) 4, pp. 66-73
Persistent link: https://www.econbiz.de/10001765104