{"id":"001030180","type":"book","title":"Pticite v hranata na naselenieto ot vănšnija grad na Veliki Preslav (9-10 v","publisher-place":"Sofija","pages":"91-94","container-title":"Interdisciplinarni izsledvanija : 17","author":[{"family":"Iliev","given":"N."}],"issued":{"raw":"1990"}}