00395nas a2200145   4500000000100000008004100001260001200042100001900054700003200073700001900105700002000124700001600144245008300160490000600243       2021                            d  c06/20211 aWojciech Kempa1 aJoanna Rydarowska-Kurzbauer1 aMarzena Halama1 aElżbieta Smuda1 aMaciej Biel00aStatistical and Econometric Analysis  of Selected Effects of COVID-19 Pandemic0 v4