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21.03.2020, 17:35:26

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Jak kogos to ciekawi:
https://multimedia.3m.com/mws/media/1791500O/comparison-ffp2-kn95-n95-filtering-facepiece-respirator-classes-tb.pdf

#koronawirus #wirus #2019ncov #2019ncovstats #higiena #lekarz #epidemia