Oral health surveys : Basic methods 

 - 4th ed 
 - Geneva:  World Health Organization,  1997 
 - vii, 66 p.;  24 cm. 
<br/><br/><label>ISBN: </label>9241544937 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Dental health surveys<br/>Manuals