Producer Price Index by Commodity: Nonmetallic Mineral Products: Other Clay, Ceramic, and Refractory Minerals, Including Miscellaneous Shale, Fuller's Earth, and Feldspar (WPU13990214D)

U.S. Bureau of Labor Statistics, Producer Price Index by Commodity: Nonmetallic Mineral Products: Other Clay, Ceramic, and Refractory Minerals, Including Miscellaneous Shale, Fuller's Earth, and Feldspar [WPU13990214D], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/WPU13990214D, .