The eyesight of school children : defective vision as related to school environment, and methods of prevention and correction - Berkowitz, J. H. 1884- (Washington : Govt. print. off., 1920)
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.
Keywords: Eye -- Care and hygiene; Eye -- Diseases