{"id":"001177469","type":"book","title":"Photographic and physicooptic methods applied for the investigation of the Thracian tomb near the village of Sveshtari, Isperih area, northeastern Bulgaria","publisher-place":"Sofija","pages":"171-201","container-title":"Helis, 2 (1992","author":[{"family":"Enev","given":"Mihail"}],"issued":{"raw":"1992"}}