Occupational Wage Survey: Philadelphia, Pennsylvania-New Jersey, November 1962 : Bulletin of the United States Bureau of Labor Statistics, No. 1345-31
United States. Bureau of Labor Statistics. "Occupational Wage Survey: Philadelphia, Pennsylvania-New Jersey, November 1962 : Bulletin of the United States Bureau of Labor Statistics, No. 1345-31," Occupational Wage Survey (1963). https://fraser.stlouisfed.org/title/4510/item/497725, accessed on April 18, 2024.