{"id":"000839831","type":"book","title":"The finger calculus in antiquity and in the Middle Ages","publisher":"de Gruyter","publisher-place":"Berlin","container-title":"Frühmittelalterliche Studien, 5.1971: S. 1-9, Ill","author":[{"family":"Alföldi-Rosenbaum","given":"Elisabeth"}],"issued":{"raw":"1971"}}