Federal Reserve Bank of Philadelphia. "March 1972," Business Review (Federal Reserve Bank of Philadelphia) (March 1972). https://fraser.stlouisfed.org/title/5580/item/557522, accessed on March 29, 2024.
Federal Reserve Bank of Philadelphia. "March 1972," Business Review (Federal Reserve Bank of Philadelphia) (March 1972). https://fraser.stlouisfed.org/title/5580/item/557522, accessed on March 29, 2024.