Building a Castle - Preparing For War Or Keeping the Peace? Castella Maris Baltici XIII and The Danish Cslte Research Association "Magt, Borg od Landskab" ; proceedings of a symposium held in Vordingborg, Naborg and Elsinore in Denmark on the 24th to the 28th August 2015 - Engberg, Nils; Etting, Vivian; Wille-Jørgensen, Dorthe (Castella MAris Baltici)