Administration of child labor laws
Subtitle: Part 4: employment-certificate system in Wisconsin
By: by Ethel E. Hanks
Series: Bureau publication -- no. 85; Industrial series -- no. 2, pt. 4; Bureau publication (United States. Children's Bureau) -- no. 85; Industrial series (United States. Children's Bureau) -- no. 2, pt. 4
Publisher: U.S. G.P.O.
Published: 1921
Place of publication: Washington, D.C
Language: eng
Number of pages: 159
Subjects: Child labor