Klen D.B. <br/><br/>
Mansik arogiya vigyan 

 - Chandigarh, India  Haryana Hindi Granth Akademi  1974 
 - 672p. 
<br/><br/><label>Source: </label>Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Applied Psychology