Proceedings of the Seventeenth Annual Meeting of the International Association of Industrial Accident Boards and Commissions. Held at Wilmington, Del., September 22-26, 1930 : Bulletin of the United States Bureau of Labor Statistics, No. 536
International Association of Industrial Accident Boards and Commissions and United States. Bureau of Labor Statistics. "Proceedings of the Seventeenth Annual Meeting of the International Association of Industrial Accident Boards and Commissions. Held at Wilmington, Del., September 22-26, 1930 : Bulletin of the United States Bureau of Labor Statistics, No. 536," Proceedings of the ... Annual Meeting of the International Association of Industrial Accident Boards and Commissions (1931). https://fraser.stlouisfed.org/title/3949/item/493194, accessed on April 19, 2024.
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