共 49 条
[3]
Bailey PM, 1973, J DENT CHILD, V40, P277
[6]
Billings A G, 1981, J Behav Med, V4, P139, DOI 10.1007/BF00844267
[7]
Biro P A, 1976, Aust Dent J, V21, P388
[8]
CHEN, 1982, J AM DENT ASSOC, V105, P43
[10]
ENGELMAN L, 1981, BMDP STATISTICAL SOF