Administration of child labor laws
Subtitle: part 3: employment-certificate system, Maryland
By: by Francis Henry Bird and Ella Arvilla Merritt
Series: Bureau publication -- no. 41; Industrial series -- no. 2, pt. 3; Bureau publication (United States. Children's Bureau) -- no. 41; Industrial series (United States. Children's Bureau) -- no. 2, pt. 3
Publisher: U.S. G.P.O.
Published: 1919
Place of publication: Washington, D.C
Language: eng
Number of pages: 127
Subjects: Child labor