Occupational Wage Survey: Philadelphia, Pennsylvania, October 1951 : Bulletin of the United States Bureau of Labor Statistics, No. 1060
United States. Bureau of Labor Statistics. "Occupational Wage Survey: Philadelphia, Pennsylvania, October 1951 : Bulletin of the United States Bureau of Labor Statistics, No. 1060," Occupational Wage Survey (1952). https://fraser.stlouisfed.org/title/4510/item/495093, accessed on May 3, 2024.