United States. Bureau of Labor Statistics. "January 1970," The Employment Situation (February 6, 1970). https://fraser.stlouisfed.org/title/144/item/496956, accessed on April 25, 2024.
United States. Bureau of Labor Statistics. "January 1970," The Employment Situation (February 6, 1970). https://fraser.stlouisfed.org/title/144/item/496956, accessed on April 25, 2024.