WORLD Health Organization
Oral health surveys: basic methods / - 4th ed. - Geneva World Health Organization 1997 - vii, 66 p.
Includes appendices & reference.
9241544937
Oral hygiene
health survey
617.601 / WOR
Oral health surveys: basic methods / - 4th ed. - Geneva World Health Organization 1997 - vii, 66 p.
Includes appendices & reference.
9241544937
Oral hygiene
health survey
617.601 / WOR