Oral health surveys : basic methods.
Oral health surveys : basic methods.
- 4th ed.
- Geneva : World Health Organization, 1997
- vii, 66 p. : ill. (some col.) 24 cm.
9241544937
Dental surveys.;Teeth;Dental Health Surveys.
RK52 / .W67 1997
614.5/996
9241544937
Dental surveys.;Teeth;Dental Health Surveys.
RK52 / .W67 1997
614.5/996