#History: “Mail Handlers Used to Poke Holes in Envelopes to Battle Germs and Viruses.” #Historical #Timeline #Culture #Society #Facts #evidence #today #fact #knowledge https://t.co/UXupq0GxNR
— Yusra Salim | يُسرى بِنْت سالم (@Shulab) June 3, 2020
from Twitter https://twitter.com/Shulab
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