Dymaczewo near Poznań. International Symposium
"Origin and Early Development
of Food-producing Cultures in
North-Eastern Africa", September 9th-13th, 1980.
Opening ceremony.
From the left: Prof. Jan Żak (Institute of Prehistory,
Adam
Mickiewicz University in Poznań),
Lech Krzyżaniak, Ph.D., Prof.
Jerzy Topolski (Institute of History,
Adam Mickiewicz University
in Poznań).