{"id":"000478510","type":"article","title":"Frühchalkolithische Gräber bei Varna. (Bulg.m.dtsch.Res.) -","pages":"81-93","container-title":"Izvestija na Narodnija muzej Varna, ns14.1978","author":[{"family":"Ivanov","given":"I."}],"issued":{"raw":"1978"}}