@book{63790,
	author = {Fiftieth Anniversary Colloquium},
	title = {Economic growth.},
	publisher = {National Bureau of Economic Research; distributed by Columbia University Press},
	year = {1972.},
	series = {National Bureau of Economic Research. General series 96. Economic research: retrospect and prospect, v. 5},
	address = {New York},
	note = {920709}
}