Producer Price Indexes for Experimental Intermediate Demand by Production Flow
United States. Bureau of Labor Statistics. "Producer Price Indexes for Experimental Intermediate Demand by Production Flow," in United States. Bureau of Labor Statistics. "April 2011," PPI Detailed Report (April 2011) : 172-175. https://fraser.stlouisfed.org/title/63/item/21905/toc/90203 , accessed on April 23, 2024.