//-->
Roman technological progress in comparative context : the Roman empire, medieval Europe and imperial China
Terpstra, Taco T., (2020)
The Economic Development of Continental Europe 1780-1870
Milward, Alan S., (2013)
Economic development of modern Europe
Ogg, Frederic Austin, (1922)
Labor productivity in cotton farming : the history of a research
Parker, W. N., (1979)
Productivity growth in grain production in the United States, 1840-60 and 1900-1910
Parker, W. N., (1973)