Talk:Balloonomania

External links modified
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 * Added archive https://web.archive.org/web/20100528025354/http://www.centennialofflight.gov/essay/Lighter_than_air/Napoleon%27s_wars/LTA3.htm to http://www.centennialofflight.gov/essay/Lighter_than_air/Napoleon%27s_wars/LTA3.htm

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oxygen or hydrogen?
The first section talks about oxygen being lighter than air. Shouldn't it be hydrogen? — Preceding unsigned comment added by 134.174.140.195 (talk) 16:29, 28 February 2021 (UTC)