Variability of Pomeranian-German-Danish ornamental forms in the Cistercian church in Gdańsk Pomerania. - Piwek, Aleksander (Scientific Association of Polish Archaeologists Gdańsk Division Stowarzyszenie Naukowe Archeologów Polskich Oddział w Gdańsku Gdańsk Archaeological Museum Muzeum Archeologiczne w Gdańsku, 2015)