United States. Bureau of Labor Statistics. "Occupational Injuries and Illnesses by Industry, July 1-December 31, 1971 : Bulletin of the United States Bureau of Labor Statistics, No. 1798,"
Occupational Injuries and Illnesses in the United States by Industry
(1973).
https://fraser.stlouisfed.org/title/4793/item/499042, accessed on March 22, 2025.
@FedFRASER