{"id":"000337180","type":"book","title":"Prehistoric boats in the rock-paintings of Cádiz and in the rock-carvings of northwestern Spain","pages":"11-19","container-title":"Crossroads in ancient shipbuilding. Proceedings of the Sixth International Symposium on Boat and Ship Archaeology, Roskilde 1991","author":[{"family":"Alonso","given":"F."}]}