Oral health surveys :
Oral health surveys : Basic methods /
World Health Organization.
- 4th ed.
- Geneva : World Health Organization, 1997.
- vii, 66 p. : ill. ; 24 cm.
Includes bibliographical references
92-4-154493-7
Dental surveys
Teeth--Diseases
Includes bibliographical references
92-4-154493-7
Dental surveys
Teeth--Diseases