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Perspektivite na čoveka : Opit za kompleksno izsledvane na problema diskusii i obobščenija
Frolov, Ivan Timofeevič - 1981
Persistent link: https://www.econbiz.de/10002177454
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Sedmata petiletka, vazhen etap v stroitelstvoto na razvitoto sotsialistichesko obshtestvo
Radulov, Lali︠u︡ At (contributor) - 1976
Persistent link: https://www.econbiz.de/10003082031
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Naselenie i ikonomika
Radulov, Lalju - 1981
Persistent link: https://www.econbiz.de/10002667772
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Semejstvo i socialno-demografsko razvitie
1982
Persistent link: https://www.econbiz.de/10002318753
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Naselenie i ikonomika
Mišev, Kiril (revision) - 1990
Persistent link: https://www.econbiz.de/10000805854
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Naselenieto na Bălgarija v načaloto na XXI vek : săstojanie i tendencii
Atanasov, Atanas (contributor) - 2011 - 1. izd.
Persistent link: https://www.econbiz.de/10009491457
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Sǔzdavane i razvitie na proizvodstvenite sistemi
Kaligorov, Christo Savčev - 1982
Persistent link: https://www.econbiz.de/10002176492
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Naselenieto na Bŭlgarija
Čankov, Žečo - 1935
Persistent link: https://www.econbiz.de/10002288059