"Canada" . . "Nordgrønland" . . "Grønland" . . "Harper & Brothers," . . "Ellesmere Island" . . "Crocker Land Expedition (1913-1917)" . . . "Crocker Land." . . "Arctic regions." . . "Arctic regions" . "1910-1919" . . . "Four Years In The White North"@en . . . . . . . . "Four years in the white North"@en . "Four Years in the White North ... Illustrated from photographs by the author"@en . . "Four years in the white North" . . . . . . "An account of the Crocker Land Expedition, 1913-1917, under the command of the author" . . "Four Years in the White North" . . . . "Four years in the white north [extract]"@en . . . "Four years in the white North : illustrated from photographs by the author" . . . . . . . . . . . . . "Narrative of the Crocker Land expedition, 1913-17, in the Queen Elizabeth Islands. (AB 10674)."@en . . . . . . . "Four years in the White North"@en . "Four years in the White North" . . . . "Four Years in the White North ... New and revised edition, etc"@en . . "Four years in the white north"@en . "Four years in the white north" . . . . . . . . . . . . . . . . . "Polar regions." . . . . "Crocker Land Expedition" . . "ekspeditioner" . . "Axel Heiberg Island" . .