共 9 条
[1]
[Anonymous], 1980, GLOBAL ERADICATION S
[3]
BREMAN JG, 1980, B WORLD HEALTH ORGAN, V58, P165
[4]
FOSTER SO, 1972, B WORLD HEALTH ORGAN, V46, P569
[5]
Jezek Z, 1983, J Hyg Epidemiol Microbiol Immunol, V27, P13
[6]
LADNYJ ID, 1972, B WORLD HEALTH ORGAN, V46, P593
[8]
MARENNIKOVA SS, 1972, B WORLD HEALTH ORGAN, V46, P599
[9]
Rao AR., 1972, SMALLPOX