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Scientific American

November 1, 1913

1 min read

A Standard of Safe Railroad Travel, Magnitude of the New Subway System and more

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This article was originally published with the title “A Standard of Safe Railroad Travel, Magnitude of the New Subway System, and more” in Scientific American Magazine Vol. 109 No. 18 (November 1913), p. 332
doi:10.1038/scientificamerican11011913-332

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