{"id":"000456684","type":"article","title":"On the Profitability of the Labour of Slaves and Coloni. (Russ.m.engl.Res.) -","pages":"161-171","container-title":"Vestnik drevnej istorii, 1977,1.1977","author":[{"family":"Pavlovskaya","given":"A.I."}],"issued":{"raw":"1977"}}