Search for: [References = "Wiśniewski, R., Szejgiec\-Kolenda, B., \& Śleszyński, P. \(2016\). Population changes and population ageing in Poland between 1960 and 2011. Geographia Polonica, 89\(2\), 259‑265. https\:\/\/doi.org\/10.7163\/GPol.0056\(\{\[citation_location\:doi\:10.7163\/GPol.0056\]\}\)"]

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