Federal Reserve Bank of San Francisco. "February 1968," Economic Review (Federal Reserve Bank of San Francisco) (February 1968). https://fraser.stlouisfed.org/title/869/item/520259, accessed on April 30, 2024.
Federal Reserve Bank of San Francisco. "February 1968," Economic Review (Federal Reserve Bank of San Francisco) (February 1968). https://fraser.stlouisfed.org/title/869/item/520259, accessed on April 30, 2024.