@book{80491,
	author = {Smith, A. D.},
	title = {The development of rates of postage :},
	publisher = {G. Allen & Unwin,},
	year = {1917.},
	series = {Studies in economics and political science ... no. 50 in the series of monographs by writers connected with the London school of economics and political science},
	address = {London :},
	note = {includes index.}
}