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Bitva trvala několik týdnů. Autor: Department of Military Art and Engineering, at the U.S. Military Academy (West Point) – West Point web site at:http://www.dean.usma.edu/history/web03/atlases/great%20war/great%20war%20%20pages/great%20war%20map%2028.htm, Volné dílo, https://commons