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\bibitem{Bojar_etal2013} Bojar, W., Knopik, L., \& Zarski, J. (2013). \textit{Analiza wplywu warunk{\'o}w klimatycznych na plonowanie roslin uprawnych w regionie kujawsko-pomorskim (Analysis of impact of climate conditions on yielding of crops in Kujavian \& Pomeranian region)} (Vol. 64).

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