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Tunneling by the Freezing Method under the East River - p22
doi:10.1038/scientificamerican07141906-22
The Government as an Armor-Plate Manufacturer - p22
doi:10.1038/scientificamerican07141906-22a
The Canadian Commission's Report on the Electric Smelting of Iron Ores - p22
doi:10.1038/scientificamerican07141906-22b
Summer Meeting of the American Association for the Advancement of Science - p23
William H. Bale, Ph. D.
doi:10.1038/scientificamerican07141906-23
A Railroad Collision as a Form of Amusement - p30
doi:10.1038/scientificamerican07141906-30