Oral health surveys :  basic methods / 
by World Health Organization. 
 - 4th ed. 
 - Geneva :  World Health Organization,  1999. 
 - 66 pages :  illustrations ;  24 cm. 
<br/><br/><label>ISBN: </label>9241544937 (WHO) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Dental health surveys.<br/>Manuals.