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Beretning fra et symposium om dansk landbrug i oldtid og middelalder afholdt 25.-26. april 1983 på Hollufgård
Thrane, Henrik, (1984)
The decline of serfdom in medieval England
Hilton, Rodney Howard, (1969)
The land and the people of nineteenth-century Cork : the rural economy and the land question
Donnelly, James S., (1975)