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The English wool trade in the middle ages
Lloyd, Terence H., (1977)
Economic growth : England in the later middle ages
Bridbury, A.R., (1962)
Medieval representation and consent : a study of early parliaments in England and Ireland, with special reference to the modus tenendi parliamentum
Clarke, Maude V., (1936)
The Asiatic mode of production : a new phoenix ; (Part 2)
McFarlane, Kenneth B., (2005)