Periodontal Disease in Pregnancy II. Correlation Between Oral Hygiene and Periodontal Condition[J] . John Silness,Harald Lö,e.Acta Odontologica . 1964 (1)
Periodontal Disease in Pregnancy II. Correlation Between Oral Hygiene and Periodontal Condition[J] . John Silness,Harald Lö,e.Acta Odontologica . 1964 (1)