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Center Vent Wheel with Hydrostatic Chamber - p41
doi:10.1038/scientificamerican10201855-41b
Reminiscences of the Paris Industrial Exhibition No. 2 - p45
doi:10.1038/scientificamerican10201855-45b
Great Fair of the American Institute - pp45 - 46
doi:10.1038/scientificamerican10201855-45e
Gunpowder, Percussion Powder, and their Substitutes - p46
doi:10.1038/scientificamerican10201855-46
