Federal Reserve Bank of New York. "1968 Index," Economic Policy Review (Federal Reserve Bank of New York) (1968). https://fraser.stlouisfed.org/title/1170/item/3193, accessed on May 28, 2022.
Federal Reserve Bank of New York. "1968 Index," Economic Policy Review (Federal Reserve Bank of New York) (1968). https://fraser.stlouisfed.org/title/1170/item/3193, accessed on May 28, 2022.