"Natural history." . . "Natural history" . "Neuengland." . . "Travel" . . "Authors, American 19th century Biography." . . "1800 - 1899" . . "Landscape changes New England." . . "Landschaftsentwicklung." . . "Natural history New England." . . "1977" . . "nature Nouvelle-Angleterre (Etats-Unis) 19e s." . . "New England (Verenigde Staten)" . . "Concord (N.H.)" . . "Paysage Nouvelle-Angleterre (États-Unis)" . . "nature Thoreau, Henry David Nouvelle-Angleterre (Etats-Unis) 19e s." . . "Human ecology New Hampshire Concord." . . "Authors, American." . . "Authors, American" . "New England." . . "New England" . "Landscape changes." . . "Landscape changes" . "Land use, Rural New Hampshire Concord History." . . "LITERARY CRITICISM American General." . . "Looks at how the land that Thoreau experienced in nineteenth-century New England has changed from open farm land to forrest." . . . . . . . . . . . . . . . . . . . . . . . . . . . . "Diaries"@en . . "History"@en . . . . . . . . . . "Electronic books"@en . . . . . "Livres électroniques" . . . . . . . . . "Thoreau's country journey through a transformed landscape"@en . "Thoreau's country journey through a transformed landscape" . . . . . . . . . "Thoreau's country : journey through a transformed landscape" . "Thoreau's country : journey through a transformed landscape"@en . "Biography"@en . . . "Biography" . . "Nouvelle-Angleterre (États-Unis)" . . . . "Landschappen." . . "Intellectual life" . . "Literary journeys New Hampshire Concord." . .