共 41 条
[1]
ALVES J, 1759, COMMUNICATION, P66
[2]
COLLINS S. D., 1934, Public Health Reports, V49, P1, DOI 10.2307/4581034
[7]
Collins Selwyn D., 1944, PUBL HEALTH REPTS, V59, P1483, DOI 10.2307/4585095
[10]
FRANCIS T, 1945, AM J HYG, V42, P1