Poznań - Górka Palace. Exhibition "Merchandize meetings on the Warta River
during prehistory and the Middle Ages" (June 1978).
From the left: (1) Zbigniew Pieczyński, MA (Poznań Archaeological Museum);
(2) Prof. Jan Żak (Institute of Prehistory, Adam Mickiewicz University in Poznań);
(3) Lech Krzyżaniak, Ph.D.