Producer Price Index by Industry: Directory and Mailing List Publishers: Directory and Mailing List Publishing from Print - Ad Sales Including Phone Directory Listings (PCU5111405111401)

U.S. Bureau of Labor Statistics, Producer Price Index by Industry: Directory and Mailing List Publishers: Directory and Mailing List Publishing from Print - Ad Sales Including Phone Directory Listings [PCU5111405111401], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/PCU5111405111401, .