Jehu Derek <br/><br/>
Behaviour modification in social work. 

 - London  John Wiley        1972 
 - 193p.  cm. 
<br/><br/><label>Standard No.: </label>123247 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>S:86, L2