@book{36122,
	author = {Bowden, Witt, and United States.},
	title = {Technological changes and employment in the electric-lamp industry,},
	publisher = {U.S. Govt. print. off.,},
	year = {1933.},
	series = {Bulletin of the United States Bureau of labor statistics, no. 593. Employment and unemployment series},
	address = {Washington,},
	note = {At head of title: United States Department of labor. Frances Perkins, secretary. Bureau of labor statistics. Isador Lubin, commissioner.}
}