John Day, An Economic History, pp. 258-261. J.R.S., XLIX, 1951, pp. 65f. Wachsmuth, Stadt Athen, I, pp. 711f. John Day, An Economic History, pp. 262-270. H. Marrou, Histoire de l' education dans l'antiquité, ... Agora 14 210 ... John Day, An Economic History, pp. 258-261 ... John Day, An Economic History, pp. 262-270 ... J.R.S., XLIX, 1951, pp. 65f.
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