World Health Organization (Geneva) <br/><br/>
Oral health survey: basic methods /  
World Health Organization. -  
 - 4th ed. -  
 - Delhi:   AITBS,   2000. 
 - 66p. : col. ill.; 23cm. 
<br/><br/><label>Dewey Class. No.: </label>617.60100723  / W83O