Leff,S. <br/><br/>
The school health service/ 
by S. Leff and Vera Leff. 
 - London:  H. K. Lewis,  1959. 
 - 316 p.;  22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>School hygiene--United Kingdom.<br/>School health.