United States. Bureau of Labor Statistics. "September 1970," The Employment Situation (October 2, 1970). https://fraser.stlouisfed.org/title/144/item/496964, accessed on May 4, 2024.
United States. Bureau of Labor Statistics. "September 1970," The Employment Situation (October 2, 1970). https://fraser.stlouisfed.org/title/144/item/496964, accessed on May 4, 2024.