Title
A social-economic grouping of the gainful workers of the United States. Gainful workers of 1930 in social-economic groups, by color, nativity, age, and sex, and by industry, with comparative statistics for 1920 and 1910, by Alba M. Edwards. With appendix.
Notes
At head of title: U. S. Department of commerce. Daniel C. Roper, secretary. Bureau of the census. William Lane Austin, director.