The eyesight of school children
Subtitle: defective vision as related to school environment, and methods of prevention and correction
By: by J.H. Berkowitz.
Publisher: Govt. print. off.
Published: 1920
Place of publication: Washington
Language: eng
Number of pages: 128
Subjects: Eye -- Care and hygiene; Eye -- Diseases
Notes: At head of title: Department of the interior...