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. "April 2004," PPI Detailed Report (April 2004) : 111-144. https://fraser.stlouisfed.org/title/63/item/21822/toc/175716 , accessed on March 28, 2024.