United States. Bureau of Labor Statistics. "October 1972," The Employment Situation (November 3, 1972). https://fraser.stlouisfed.org/title/144/item/496989, accessed on February 21, 2019.
Public Domain
United States. Bureau of Labor Statistics. "October 1972," The Employment Situation (November 3, 1972). https://fraser.stlouisfed.org/title/144/item/496989, accessed on February 21, 2019.
Public Domain