@book{35986,
	author = {Pennsylvania Railroad. and United States.},
	title = {Pennsylvania railroad wage data,},
	publisher = {U.S. Govt. print. off.,},
	year = {1930.},
	series = {Bulletin of the United States Bureau of labor statistics,},
	address = {Washington,},
	note = {At head of title:  United States Department of labor, James J. Davis, secretary.  Bureau of labor statistics.  Ethelbert Stewart, commissioner.}
}