Open air schools
Ayres, Leonard Porter, 1879-1946.
Open air schools [by] Leonard P. Ayres ... - New York, Dept. of School Hygiene [1910] - 13 p. illus., diagrs. 23 cm. - [Russell Sage Foundation. Dept. of Child Hygiene. Pamphlet] no. 71 .
Reprinted from the Proceedings of the Albany 1910 meeting of the Committee on the Prevention of Tuberculosis of the New York State Charities Aid Association.
e 10001941
Open-air schools.
LB3485 / .A8
Open air schools [by] Leonard P. Ayres ... - New York, Dept. of School Hygiene [1910] - 13 p. illus., diagrs. 23 cm. - [Russell Sage Foundation. Dept. of Child Hygiene. Pamphlet] no. 71 .
Reprinted from the Proceedings of the Albany 1910 meeting of the Committee on the Prevention of Tuberculosis of the New York State Charities Aid Association.
e 10001941
Open-air schools.
LB3485 / .A8