Averill Lawrence Augustus <br/><br/>
Hygiene of instruction : A study of the mental health of the school child 

 - Boston, USA  Houghton Mifflin  Company  1928 
 - xiv,386p. 
<br/><br/><label>Source: </label>Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Applied Psychology