Producer Price Indexes for the Net Output of Selected Industries and Products
United States. Bureau of Labor Statistics. "Producer Price Indexes for the Net Output of Selected Industries and Products," in United States. Bureau of Labor Statistics. "March 1991," PPI Detailed Report (March 1991) : 15-146. https://fraser.stlouisfed.org/title/63/item/21639/toc/233291 , accessed on March 28, 2024.