United States. Bureau of Labor Statistics. "July 1972," The Employment Situation (August 4, 1972). https://fraser.stlouisfed.org/title/144/item/496986, accessed on April 23, 2024.
United States. Bureau of Labor Statistics. "July 1972," The Employment Situation (August 4, 1972). https://fraser.stlouisfed.org/title/144/item/496986, accessed on April 23, 2024.