Producer Price Indexes for Commodity and Service Groupings and Individual Items
United States. Bureau of Labor Statistics. "Producer Price Indexes for Commodity and Service Groupings and Individual Items," in United States. Bureau of Labor Statistics. "May 2015," PPI Detailed Report (May 2015) : 33-90. https://fraser.stlouisfed.org/title/63/item/495666/toc/509757 , accessed on April 18, 2024.