...0029, pp. 39- 40. For restatements of these figures, with varying degrees of detail and caution, see:AndrzejWyrobisz, "Economic Landscapes: Poland from the Fourteenth tothe Seventeenth Century," in East-Central Europe in Transition...
...Minnesota Press, 1966.Wyczański, Andrzej. Studia nad folwarkiem szlacheckim w...Athens: Univ. of Georgia, 1983.Wyrobisz, A. Mining in Medieval and Modern Poland...Endurance Press, 1961.Zaja + Andrzej ̧czkowski. Z Dziejów inteligencji...