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The Anglo-German industrial productivity paradox : 1895 - 1938 ; a restatement and a possible resolution
Ritschl, Albrecht, (2006)
Prices and production : elements of a system-theoretic perspective
Ritschl, Albrecht, (1989)
Measuring national product in Germany, 1925 - 38 : the state of the debate and some new results
Ritschl, Albrecht, (1998)