Oral health surveys:   Basic methods 
/ World Health Organization 
 - 4th ed. 
 - Geneva:   World Health Organization,   1997 
 - 66p. 
<br/><br/><label>ISBN: </label>9241544937 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Dental surveys
<br/><br/><label>Subjects--Index Terms: </label>Teeth-Diseases 
<br/><br/><label>Universal Decimal Class. No.: </label>616.31  / L7