The extent of child labor officially measured
By: E.N. Clopper
Contributors: National Child Labor Committee (U.S.)
Edition: Rev.
Series: Pamphlet -- no. 237; Pamphlet (National Child Labor Committee (U.S.)) -- no. 237; Open Collections Program at Harvard University
Publisher: National Child Labor Committee
Published: 1916
Place of publication: New York
Language: eng
Subjects: Child labor; Statistics
Notes: Caption title.