Proceedings of the Seventh Annual Meeting of the International Association of Industrial Accident Boards and Commissions : Bulletin of the United States Bureau of Labor Statistics, No. 281
International Association of Industrial Accident Boards and Commissions and United States. Bureau of Labor Statistics. "Proceedings of the Seventh Annual Meeting of the International Association of Industrial Accident Boards and Commissions : Bulletin of the United States Bureau of Labor Statistics, No. 281," Proceedings of the ... Annual Meeting of the International Association of Industrial Accident Boards and Commissions (June 1921). https://fraser.stlouisfed.org/title/3949/item/477550, accessed on April 19, 2024.