Agiboalova, E. V. History of the Middle Ages : text book for the 6th form / E. V. Agiboalova and G. M. Donskoi ; translated from the Russian by T. Ab - Moscow : Pub. House, 1965 - 283 p. : ill., charts, maps ; 22 cm. Subjects--Topical Terms: Middle Ages--HistoryFeudalism Dewey Class. No.: 909