@book{286105,
	author = {Ringe, Helen H. and United States.},
	title = {Negroes in the United States :},
	publisher = {United States Department of Labor, Bureau of Labor Statistics,},
	year = {1952.},
	series = {Bulletin ;},
	address = {Washington, D.C. :},
	note = {"December 1952."},
	url = {https://purl.fdlp.gov/GPO/gpo114947}
}