File:Materials for homemade masks - efficiency.png

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Summary

Description
English: Efficiency of different materials for homemade masks.
Date
Source Own work, literature source: [1]
Author Sciencia58

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Captions

The efficiency of different material for homemade masks.

Items portrayed in this file

depicts

mask

inception

12 May 2020

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current12:12, 12 May 2020Thumbnail for version as of 12:12, 12 May 20201,740 × 1,528 (559 KB)commons>Sciencia58spelling

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