Administration of child labor laws. Part 2, Employment certificate system, New York [microform] / by Helen L. Sumner and Ethel E. Hanks.

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Bibliographic Details
Main Author: Sumner, Helen L. (Helen Laura), 1876-1933
Corporate Author: United States. Children's Bureau
Other Authors: Hanks, Ethel E. (Ethel Edna), 1883-
Other title:Employment-certificate system, New York.
Format: Government Document Book
Language:English
Published: Washington : G.P.O., 1917.
Series:Bureau publication (United States. Children's Bureau) ; no. 17.
Industrial series ; no. 2 pt. 2.
Subjects: