//-->
Living Standards and Growth.
O Grada, C., (2000)
Culture, Politics and Innovation: Creamery Diffusion in late 19th Century Denmark and Ireland.
O'Rourke, K.H., (1999)
The Heckscher-Ohlin Model Between 1400 and 2000: When it Explained Factor Price Convergence, Ehen it Did not, and Why.