Area Wage Survey: The Waterloo, Iowa, Metropolitan Area, November 1971 : Bulletin of the United States Bureau of Labor Statistics, No. 1725-20
United States. Bureau of Labor Statistics. "Area Wage Survey: The Waterloo, Iowa, Metropolitan Area, November 1971 : Bulletin of the United States Bureau of Labor Statistics, No. 1725-20," Area Wage Survey (1972). https://fraser.stlouisfed.org/title/4655/item/498798, accessed on March 28, 2024.