16109 New York: Oxford University Press, 1956. First US printing. Original title in England was 'In Balloon and Bathyscape.' Discussion of both the stratospheric balloon, the FNRS, which Piccard built, and of the abyssal submarine, the Trieste. Illustrated with photographs and charts. 192 pages. Good in brown cloth with blue lettering (some shelfwear to the edges of the boards.) HC 1st ed - $25.00USD
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