United States. Bureau of Labor Statistics. "October 1981," PPI Detailed Report (October 1981). https://fraser.stlouisfed.org/title/63/item/21551, accessed on April 25, 2024.
United States. Bureau of Labor Statistics. "October 1981," PPI Detailed Report (October 1981). https://fraser.stlouisfed.org/title/63/item/21551, accessed on April 25, 2024.