@book{25479,
	author = {Postan, M. M.},
	title = {The Cambridge economic history of Europe. Volume-1, The Agrarian Life of theMiddle Ages /},
	publisher = {Cambridge U.P.,},
	year = {1966-<1989   >},
	address = {Cambridge,},
	edition = {2nd ed.},
	note = {Vol. 8, edited by Peter Mathias and Sidney Pollard.}
}