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. "March 2012," PPI Detailed Report (March 2012) : 168-171. https://fraser.stlouisfed.org/title/63/item/21916/toc/41104 , accessed on April 23, 2024.