Federal Reserve Bank of Philadelphia. "December 1972," Business Review (Federal Reserve Bank of Philadelphia) (December 1972). https://fraser.stlouisfed.org/title/5580/item/557531, accessed on April 19, 2024.
Federal Reserve Bank of Philadelphia. "December 1972," Business Review (Federal Reserve Bank of Philadelphia) (December 1972). https://fraser.stlouisfed.org/title/5580/item/557531, accessed on April 19, 2024.