00859cam a22002291 4500 e 28000031 DLC 20260227111218.0 780705s1927 xx 000 0 eng c e 28000031 (OCoLC)4023209 Library, U.S. Bur. of Education OAk DLC premarc LB3451 .O5 1927 Hadley, Hazel C. Sight saving classes in the public schools, presenting the Ohio plan. Prepared by Hazel C. Hadley, director, Division of special classes, under direction of Vernon M. Riegel, director of education, 1926-1927. Columbus, O., The F.J. Heer printing co., 1927. 90 p. plates. 23 cm. Eye Care and hygiene. Vision. Ohio. Department of Education. Division of Special Classes. 20899 20899