Occupational Wage Survey: Philadelphia, Pennsylvania, May 1950 : Bulletin of the United States Bureau of Labor Statistics, No. 1008
United States. Bureau of Labor Statistics. "Occupational Wage Survey: Philadelphia, Pennsylvania, May 1950 : Bulletin of the United States Bureau of Labor Statistics, No. 1008," Occupational Wage Survey (1950). https://fraser.stlouisfed.org/title/4510/item/495077, accessed on April 17, 2024.