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Izmeneniia v estestveniia pripast na selskoto naselenie v NR Bâlgariia. (Changes in the natural growth of the rural population in Bulgaria)
(supprimer)
Survey of the differences and dynamics of the rural and urban population in Bulgaria since 1910 when the natural growth had reached its climax (21,5 %). Different stages of decreasing afterwords followed. The decrease will extend in the next several