Industrial and occupational trends in national employment, 1910-1940, 1910-1948 / [by] Gladys L. Palmer [and] Ann Ratner.
- [Philadelphia], Industrial Research Dept., Wharton School of Finance and Commerce, University of Pennsylvania, 1949.
68 p. tables. 28 cm.
- Wharton School. Industrial Research Dept. Research report, no. 11.
Research report no. 11.