Ayres, Leonard Porter,  1879-1946. <br/><br/>
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 .
<br/><br/> 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. 
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<br/><br/><label>LCCN: </label>e  10001941  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Open-air schools.
<br/><br/><label>LC Class. No.: </label>LB3485  / .A8