共 9 条
[1]
ADAMS PF, 1991, VITAL HLTH STATIS 10, V181
[2]
BEAN JA, 1991, VITAL HLTH STATIST 2, V114
[3]
BOEKELOO B, 1991, MORBIDITY MORTALITY, V42
[4]
BRYANT E, 1975, UNPUB COMMUNICA 0502
[5]
JUDKINS D, 1990, UNPUB COMMUNICA 0614
[6]
Kish L., 1965, SURVEY SAMPLING
[7]
MASSEY JT, 1989, VITAL HLTH STATIST 2, V110
[8]
RIES P, 1990, VITAL HLTH STATIS 10, V171
[9]
1987, SUDAAN SURVEY DATA A