@book{286128,
	author = {Mitchell, Wesley C.| and United States.},
	title = {The making and using of index numbers /},
	publisher = {United States Government Printing Office,},
	year = {1938.},
	series = {Bulletin ;},
	address = {Washington :},
	note = {At head of title: United States Department of Labor, Frances Perkins, secretary. Bureau of Labor Statistics, Isador Lubin, commissioner.},
	url = {https://purl.fdlp.gov/GPO/gpo114951}
}