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Propulsion of Ships and Aquatic Animals - p305
doi:10.1038/scientificamerican06051858-305
Ericsson on the Atlantic Cable Machinery - p309
doi:10.1038/scientificamerican06051858-309d
The Amount of Food Consumed by a Man During his Lifetime - p310
doi:10.1038/scientificamerican06051858-310b
