@book{285687,
	author = {United States.},
	title = {Labor-management contract provisions.},
	publisher = {United States Department of Labor, Bureau of Labor Statistics,},
	year = {1951-1955.},
	series = {Bulletin},
	address = {[Washington, D.C.] :},
	note = {"Prevalence and characteristics of selected collective bargaining clauses."},
	url = {https://purl.fdlp.gov/GPO/gpo119520}
}