{"id":"000364049","type":"book","title":"Tumuli dated to the Roman period in northeastern Bulgaria. Current state and problems of the studies. (Bulg.m.engl.Res.) -","pages":"135-146","container-title":"Helis, 1. Getskite zemi prez bronzovata i željaznata epoha. (Bulg.m.engl.Res","author":[{"family":"Valcheva","given":"D."}]}