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The Hillside Line of the North Hudson County Railway Company - pp241 - 242
doi:10.1038/scientificamerican04211894-241
The Utilization of the Waste Energy of the World - pp242 - 243
doi:10.1038/scientificamerican04211894-242
House of Senor Saracibar, Architect, Salamanca, Spain - pp244 - 245
doi:10.1038/scientificamerican04211894-244b
Underground Conductors for Electric Street Railways - pp245 - 246
doi:10.1038/scientificamerican04211894-245a
Improved High Pressure Air Compressors - pp249 - 251
doi:10.1038/scientificamerican04211894-249