Proceedings of the Eighteenth Annual Meeting of the International Association of Industrial Accident Boards and Commissions. Held at Richmond, Va., October 5-8, 1931 : Bulletin of the United States Bureau of Labor Statistics, No. 564
International Association of Industrial Accident Boards and Commissions and United States. Bureau of Labor Statistics. "Proceedings of the Eighteenth Annual Meeting of the International Association of Industrial Accident Boards and Commissions. Held at Richmond, Va., October 5-8, 1931 : Bulletin of the United States Bureau of Labor Statistics, No. 564," Proceedings of the ... Annual Meeting of the International Association of Industrial Accident Boards and Commissions (1932). https://fraser.stlouisfed.org/title/3949/item/493195, accessed on May 1, 2024.
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