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Notes and Queries
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The Government's Scientific Exhibits at the Tennessee Exposition - p242
doi:10.1038/scientificamerican04171897-242c
Practical Directions for Soldering Aluminum - p243
doi:10.1038/scientificamerican04171897-243d
The Densmore Typewriter Ball Bearing Type Bar Joints - p244
doi:10.1038/scientificamerican04171897-244b