@book{61812,
	author = {Wicksell, Knut, and Classen, E.},
	title = {Lectures on political economy : },
	publisher = {G. Routledge and Sons, Ltd.,},
	year = {1935.},
	address = {London :},
	note = {"The present translation is based upon the third edition."--Introd., p. xviii.}
}