@book{30836,
	author = {Uselding, Paul J.},
	title = {Studies in the technological development of the American economy during the first half of the nineteenth century},
	publisher = {Arno Press},
	year = {1975, c1971.},
	series = {Dissertations in American economic history},
	address = {New York},
	note = {Originally presented as the author's thesis, Northwestern University, 1970.}
}