共 8 条
[1]
BELCHER DW, 1976, PUBLIC HEALTH REP, V91, P368
[4]
GREENLICH MR, 1973, S HLTH CARE RESEARCH
[5]
KESSNER DM, 1973, CONTRASTS HLTH STATU, V2
[6]
NEUMANN A. K., 1972, Ghana Medical Journal, V11, P18
[7]
1965, NCHS2 SER
[8]
1957, CHRONIC ILLNESS LARG, pCH14