pl23_nur09520.jpg
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https://www.noaa.gov/media/digital-library-photo/pl23nur09520jpgDescription
Lethbridge diving machine, 1715-- a one atmosphere system.
Credit
OAR/National Undersea Research Program (NURP); Smithsonian Institution
Collection
Voyage to Inner Space
National Undersea Research Program (NURP) Collection
Graphics
Systems
Keywords
Graphics
Systems