Producer Price Indexes and Percent Changes for Selected Commodity, by Stage of Processing
United States. Bureau of Labor Statistics. "Producer Price Indexes and Percent Changes for Selected Commodity, by Stage of Processing," in United States. Bureau of Labor Statistics. "April 1987," PPI Detailed Report (April 1987) : 18-20. https://fraser.stlouisfed.org/title/63/item/21617/toc/254216 , accessed on April 24, 2024.