共 12 条
[1]
KING AE, 1971, PREVENTIVE DENTISTRY
[7]
O'Leary T J, 1967, Parodontol Acad Rev, V1, P7
[8]
EPIDEMIOLOGICAL STUDIES OF PERIODONTAL DISEASES
[J].
AMERICAN JOURNAL OF PUBLIC HEALTH AND THE NATIONS HEALTH,
1968, 58 (09)
:1713-+