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Scientific American

April 30, 1910

1 min read

The Elevator Installation of the Metropolitan Life Tower, An Ingenious Way of Examining the Contents of the Duodenum

By Herbert T. Wade

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This article was originally published with the title “The Elevator Installation of the Metropolitan Life Tower, An Ingenious Way of Examining the Contents of the Duodenum” in Scientific American Magazine Vol. 102 No. 18 (April 1910), p. 358
doi:10.1038/scientificamerican04301910-358

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