The eyesight of school children : defective vision as related to school environment, and methods of prevention and correction /
Berkowitz, J. H. 1884-
The eyesight of school children : defective vision as related to school environment, and methods of prevention and correction / by J.H. Berkowitz. - Washington : Govt. print. off., 1920. - 128 p. front. : illus., plates ; 23 cm.
At head of title: Department of the interior...
Copy 1 of L111.A6 with: Natural science teaching in Great Britain / Committee on Natural Science in the Educational System of Great Britain. Washington : Govt. Print. Off., 1919. Bound together subsequent to publication. Copy 2 of L111.A6 with: Public discussion and information service of university extension / Walton S. Bittner. Washington : Govt. Print. Off., 1920. Bound together subsequent to publication.
e 20000628
Eye--Care and hygiene.
Eye--Diseases.
L111 / .A6 1919, no. 65
The eyesight of school children : defective vision as related to school environment, and methods of prevention and correction / by J.H. Berkowitz. - Washington : Govt. print. off., 1920. - 128 p. front. : illus., plates ; 23 cm.
At head of title: Department of the interior...
Copy 1 of L111.A6 with: Natural science teaching in Great Britain / Committee on Natural Science in the Educational System of Great Britain. Washington : Govt. Print. Off., 1919. Bound together subsequent to publication. Copy 2 of L111.A6 with: Public discussion and information service of university extension / Walton S. Bittner. Washington : Govt. Print. Off., 1920. Bound together subsequent to publication.
e 20000628
Eye--Care and hygiene.
Eye--Diseases.
L111 / .A6 1919, no. 65