Producer Price Index by Commodity: Miscellaneous Products: Ophthalmic Fronts, Temples, and Focal and Contact Lenses (WPU15640107)

U.S. Bureau of Labor Statistics, Producer Price Index by Commodity: Miscellaneous Products: Ophthalmic Fronts, Temples, and Focal and Contact Lenses [WPU15640107], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/WPU15640107, February 9, 2023.