Recommended readings (Machine generated): "Phelps-Brown, E.H. and Shiela V. Hopkins (1956), "Seven Centuries of the Prices of Consumables, compared with Builders' Wage-Rates", Economica, New Series, XXIII (89-92), November, 296-314" -- "O'Donoghue, Jim, Louise Goulding, and Grahame Allen (2004),...