01353cam a22002651 4500 e 20000628 DLC 20260227111212.0 821027s1920 dcuaf 000 0 eng c e 20000628 (OCoLC)8896874 U.S. Off. of educ. Library OKentU OCoLC DLC L111 .A6 1919, no. 65 LB3451 .B4 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. United States. Office of Education. Bulletin, 1919, no. 65 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. DLC 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. DLC Eye Care and hygiene. Eye Diseases. 20419 20419