Finds of the Funnel Beaker, globular amphora + corded ware cultures in Dudka, the Great Masurian Lakeland - Gumiński, Witold (The built environment of coast areas during the Stone Age. A symposium at the centenary of archaeological excavations at Rzucewo, Rzucewo-Gdańsk, 4-9 october 1994., 1997)