共 5 条
[1]
BRIGHTMAN IJ, 1952, AM J PUBL HLTH, V42, P840
[2]
GORDON JE, 1949, AJPH, V39, P504
[3]
ISKRANT A P, 1955, J Chronic Dis, V1, P368, DOI 10.1016/0021-9681(55)90091-6
[4]
*NAT CTR HLTH STAT, 1952, 19 SPEC REP, V37
[5]
*NAT CTR HLTH STAT, 1949, 21 SPEC REP, V36