Szukana fraza: [Bibliografia = "Kowalski, P.A., Szwagrzyk, M., Kiełpinska, J., Konior, A., Kusy, M. \(2021\). Numerical analysis of factors, pace and intensity of the corona virus \(COVID\-19\) epidemic in Poland. Ecological informatics, 63, 101284. https\:\/\/doi.org\/10.1016\/j.ecoinf.2021.101284"]

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