Work of school chldren during out-of-school hours
By: by C.D. Jarvis.
Series: Bulletin / Dept. of the Interior, Bureau of Education -- 1917, no. 20; Bulletin (United States. Office of Education) -- 1917, no. 20.
Publisher: Govt. Printing Office
Published: 1917
Place of publication: Washington
Subjects: Child labor -- United States.; School gardens.