共 53 条
[3]
BATSCHELET E, 1981, CIRCULAR STATISTICS, P191
[5]
Cohen-Cole S A, 1983, Psychiatr Med, V1, P215
[6]
Dawson J., 1945, BRIT DENTAL JOUR, V79, P151
[7]
DEAN HT, 1945, AM J PUBLIC HEALTH, V35, P433
[8]
DENNISON DK, 1985, J DENT RES, V64, P197