Producer Price Indexes and Percent Changes for Commodity Groupings and Individual Items
United States. Bureau of Labor Statistics. "Producer Price Indexes and Percent Changes for Commodity Groupings and Individual Items," in United States. Bureau of Labor Statistics. "May 1999," PPI Detailed Report (May 1999) : 148-188. https://fraser.stlouisfed.org/title/63/item/21764/toc/255683 , accessed on May 4, 2024.