@book{8402,
	author = {Universities--National Bureau Committee for Economic Research. and Social Science Research Council (U.S.).},
	title = {The rate and direction of inventive activity: economic and social factors;},
	publisher = {Princeton University Press,},
	year = {1962.},
	address = {Princeton,},
	note = {"A report of the National Bureau of Economic Research, New York."}
}