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. 1919 Nov;5(11):521–522. doi: 10.1073/pnas.5.11.521

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A Vapore-Free Vacuum Seal

A H Pfund

¹Department of Physics, Johns Hopkins University

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¹

¹Department of Physics, Johns Hopkins University

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PMCID: PMC1091644 PMID: 16576426

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Articles from Proceedings of the National Academy of Sciences of the United States of America are provided here courtesy of National Academy of Sciences

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