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In the Gas-Mask Factory

Where Fruit Stones and Nut Shells are Used to Protect Our Boys from the Poison Puffs of the Hun

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Scientific American Magazine Vol 119 Issue 14This article was originally published with the title “In the Gas-Mask Factory” in Scientific American Magazine Vol. 119 No. 14 (), p. 275
doi:10.1038/scientificamerican10051918-275