{"id":"000478263","type":"article","title":"Sur l'étude des forteresses thraces dans le département de Smolian. (Bulg.m.franz.Res.) -","pages":"89-98","container-title":"Izvestija na muzeite ot Južna Bălgarija. Bulletin des musées de la Bulgarie du Sud, 1.1975","author":[{"family":"Petrova","given":"N."}],"issued":{"raw":"1975"}}