W.H.O. <br/><br/>
International Congress on Oral Cancer (Head and Neck)  Textual Documents 

 - [s.l]:  W.H.O.,  1989. 
 - 208. 
<br/><br/><label>ISBN: </label>  
<br/><br/><label>Dewey Class. No.: </label>617.6  / W.H.O.