共 8 条
[1]
Elwood J H, 1967, J Ir Med Assoc, V60, P369
[3]
HOBSON W, 1955, HEALTH ELDERLY HOME
[5]
KORNZWEIG AL, 1964, GERIATRICS, V19, P24
[6]
MILNE JS, 1971, BRIT J PREV SOC MED, V25, P37
[7]
SHELDON JH, 1948, SOCIAL MEDICINE OLD
[8]
1968, MONOCULAR BINOCULAR