@book{36309,
	author = {United States.},
	title = {Changes in retail prices of electricity, 1923-38.},
	publisher = {U.S. Govt. print. off.,},
	year = {1939.},
	series = {Bulletin},
	address = {Washington,},
	note = {At head of title: United States Department of Labor. Frances Perkins, secretary.  Bureau of labor statistics. Isador Lubin, commissioner.}
}