United States. Bureau of Labor Statistics. "May 1993," PPI Detailed Report (May 1993). https://fraser.stlouisfed.org/title/63/item/21692, accessed on April 19, 2024.
United States. Bureau of Labor Statistics. "May 1993," PPI Detailed Report (May 1993). https://fraser.stlouisfed.org/title/63/item/21692, accessed on April 19, 2024.