United States. Bureau of Labor Statistics and International Association of Public Employment Services. "Proceedings of the Tenth Annual Meeting of the International Association of Public Employment Services. Held at Washington, D C., September 11-13, 1922 : Bulletin of the United States Bureau of Labor Statistics, No. 337," Proceedings of the Annual Meeting of the International Association of Public Employment Services (April 1923). https://fraser.stlouisfed.org/title/4022/item/493035, accessed on December 30, 2024.