Media type: E-Article Title: Viewshed mapping Contributor: Fisher, Peter F. [Author] Published: 2015 Published in: The history of cartography [Elektronische Ressource] ; Vol. 6, Pt. 2: Cartography in the twentieth century ; (2015), Seite 1676-1678 Language: English Origination: Footnote: Engl Access State: Open Access