共 21 条
[3]
GREENE H, 1953, J Med Assoc Ga, V42, P216
[6]
HILL EL, 1951, AM J PUB HLTH, V41, P396
[8]
LACKMAN DB, 1953, PUBLIC HEALTH LAB, V11, P97
[9]
McCROAN J E Jr, 1947, J Med Assoc Ga, V36, P242