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The Value of the Nile Barrages to Egypt - p307
doi:10.1038/scientificamerican04131907-307
Seal Hunting on the Ice Floes of the North - p308
Allen Day
doi:10.1038/scientificamerican04131907-308
The North Carolina-Virginia Inland Waterway - pp309 - 310
H. L. Wilson
doi:10.1038/scientificamerican04131907-309
Branch Railways by the Telpherage System - pp311 - 312
doi:10.1038/scientificamerican04131907-311
The Carnegie Technical Schools, Pittsburg, Pa - pp313 - 314
Day Allen Willey
doi:10.1038/scientificamerican04131907-313