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. "September 1990," PPI Detailed Report (September 1990) : 143-188. https://fraser.stlouisfed.org/title/63/item/21661/toc/105307 , accessed on May 12, 2024.