Your opportunity in the schools
By: L. Emmett Holt
Series: Health education -- no. 9; Health education (Washington, D.C. : 1919) -- no. 9
Publisher: Department of the Interior, Bureau of Education; Government Printing Office
Published: 1921
Place of publication: Washington
Language: eng
Number of pages: 14
Subjects: Health education; Children; Health and hygiene; Health Education; Child Health