United States. Bureau of Labor Statistics. "March 1998," PPI Detailed Report (March 1998). https://fraser.stlouisfed.org/title/63/item/21749, accessed on April 17, 2024.
United States. Bureau of Labor Statistics. "March 1998," PPI Detailed Report (March 1998). https://fraser.stlouisfed.org/title/63/item/21749, accessed on April 17, 2024.