Барило, Ірина. “AGE AND SEX STRUCTURE OF THE POPULATION AS A FACTOR OF GEODEMOGRAPHICAL DEVELOPMENT (FOR EXAMPLE POLTAVA REGION)”. Human Geography Journal 17, no. 2 (December 12, 2014): 190-194. Accessed May 3, 2024. https://periodicals.karazin.ua/socecongeo/article/view/1105.