{"id":"001224785","type":"book","title":"Bolgarskie zemli v 6-4 tysjačeletii do n.ė. i nekotorye voprosy drevnejšej istorii Evropy. Bulgarian lands in the 6th-4th millennia B.C. and some problems of ancient European history","pages":"96-103","container-title":"Peterburgskij Archeologičeskij Vestnik, 9 (1994","author":[{"family":"Merpert","given":"Nikolaj Jakovlevič"}],"issued":{"raw":"1994"}}