Matches in DBpedia 2016-04 for { ?s ?p "Ernest de Koven Leffingwell (January 13, 1875 – January 27, 1971) was an arctic explorer, geologist and Spanish-American War veteran.During the period from 1906 to 1914, Leffingwell spent 9 summers and 6 winters on the Arctic coast of Alaska, making 31 trips by dog sled and/or small boats. He created the first accurate map of a large part of the Alaskan arctic coastline. He was the first to scientifically describe permafrost and to pose theories about permafrost which have largely proven true."@en }
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- Ernest_de_Koven_Leffingwell comment "Ernest de Koven Leffingwell (January 13, 1875 – January 27, 1971) was an arctic explorer, geologist and Spanish-American War veteran.During the period from 1906 to 1914, Leffingwell spent 9 summers and 6 winters on the Arctic coast of Alaska, making 31 trips by dog sled and/or small boats. He created the first accurate map of a large part of the Alaskan arctic coastline. He was the first to scientifically describe permafrost and to pose theories about permafrost which have largely proven true.".
- Q5394063 comment "Ernest de Koven Leffingwell (January 13, 1875 – January 27, 1971) was an arctic explorer, geologist and Spanish-American War veteran.During the period from 1906 to 1914, Leffingwell spent 9 summers and 6 winters on the Arctic coast of Alaska, making 31 trips by dog sled and/or small boats. He created the first accurate map of a large part of the Alaskan arctic coastline. He was the first to scientifically describe permafrost and to pose theories about permafrost which have largely proven true.".