Maps and Exploration
Sir David Kim Hempleman-Adams (born 10 October 1956) is a British industrialist and adventurer. He is the first British person to complete the Explorer's Grand Slam, by reaching the Geographic and Magnetic North and South Poles, as well as climbing the highest peaks in all seven continents, the first person to fly to the North Pole in a balloon, and the first person to make a balloon crossing of the Atlantic in an open basket.
History of geodesy.
Adolphus Greely.
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