共 9 条
[1]
CALLOW KA, 1976, INFECT IMMUN, V13, P1
[3]
CHAKRAVERTY P, 1971, B WORLD HEALTH ORGAN, V45, P755
[5]
PEREIRA M, 1978, B WORLD HEALTH ORGAN, V56, P193
[6]
ANTIGENIC VARIANTS OF INFLUENZA B VIRUS
[J].
BMJ-BRITISH MEDICAL JOURNAL,
1973, 4 (5885)
:127-131
[7]
SCHILD GC, 1975, B WORLD HEALTH ORGAN, V52, P43
[9]
1980, WEEKLY EPIDEMIOLOGIC, V55, P17