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Prof. James Scott: „Marketplace tested over 20 different masks.”

Marketplace tested over 20 different masks. Here's what will best protect you and others during the pandemic CBC's Marketplace put more than two-dozen masks through the rigorous National Institute…

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3 grudnia 2020

Bez kategorii / KoronaNewsy / Ze świata

Kanada: Covid-19 a maski

A growing number of cities and regions in Canada have mandated masks for indoor public spaces. The debate over whether or not to wear a mask has been front and…

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16 lipca 2020