Industry Wage Survey: Pressed or Blown Glass and Glassware, May 1970 : Bulletin of the United States Bureau of Labor Statistics, No. 1713
United States. Bureau of Labor Statistics. "Industry Wage Survey: Pressed or Blown Glass and Glassware, May 1970 : Bulletin of the United States Bureau of Labor Statistics, No. 1713," Industry Wage Survey: Pressed or Blown Glass and Glassware (1971). https://fraser.stlouisfed.org/title/4626/item/498773, accessed on October 21, 2020.