Federal Reserve Bank of Philadelphia. "October 1971," Business Review (Federal Reserve Bank of Philadelphia) (October 1971). https://fraser.stlouisfed.org/title/5580/item/557517, accessed on April 25, 2024.
Federal Reserve Bank of Philadelphia. "October 1971," Business Review (Federal Reserve Bank of Philadelphia) (October 1971). https://fraser.stlouisfed.org/title/5580/item/557517, accessed on April 25, 2024.