{"id":"000400883","type":"article","title":"The change of status of Roman coloni in the fourth and fifth centuries A.D. (Russ.m.engl.Res.) -","pages":"33-48","container-title":"Vestnik drevnej istorii, 1989,4.1989","author":[{"family":"Koptev","given":"A.V."}],"issued":{"raw":"1989"}}