under the high protectorate of the chairman of the Councils of Ministers of the Polish People's Republic, Piotr JaroszewiczThe Local Organizing Committee1973]
by Horst Sindermann and Piotr Jaroszewicz, chairmen of the Councils of Ministers of the German Democratic Republic and the Polish People's Republic, to mark the 25th anniversary of the Zgorzelec Treaty on the Oder-Neisse Peace Line ; [translated by Intertext Berlin]Panorama DDR1975