119 pages, 1 unnumbered page 1 ., including tables, diagrams, form. ; 23 cm
OCLC
ocm03062241
At head of title: Commonwealth of Pennsylvania. Department of labor and industry.
"The study was supervised and the report written by Beatrice McConnell, assistant director of the Bureau of women and children. The field work was done by Elizabeth Johnson and Rebecca Smaltz, investigators of the bureau." p. [5]