Occupational Wage Survey: Philadelphia, Pennsylvania-New Jersey, November 1963 : Bulletin of the United States Bureau of Labor Statistics, No. 1385-31
United States. Bureau of Labor Statistics. "Occupational Wage Survey: Philadelphia, Pennsylvania-New Jersey, November 1963 : Bulletin of the United States Bureau of Labor Statistics, No. 1385-31," Occupational Wage Survey (1964). https://fraser.stlouisfed.org/title/4510/item/497852, accessed on April 19, 2024.