Maclean Doug <br/><br/>
Helping process    An introduction.      

 - London  Croom Helm        1988 
 - 171p.  cm. 
<br/><br/><label>Standard No.: </label>42735 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>S8:771, M8