Application of computed tomography to the study of Mesolithic portable art : results, interpretations and expectations : the case of an ornamented roe deer antler harpoon from Police, north-west Poland - Płonka, Tomasz; Diakowski, Marcin; Krupa-Kurzynowska, Joanna; Hoppe, Viktoria (Oxford University, Research Laboratory for Archaeology and the History of Art, 2024)