共 8 条
[5]
ORIGIN OF O SEROTYPES OF ESCHERICHIA-COLI IN BABIES AFTER NORMAL DELIVERY
[J].
JOURNAL OF HYGIENE,
1974, 72 (01)
:67-70
[7]
KONOWALCHUK J, 1978, INFECT IMMUN, V22, P644, DOI 10.1128/IAI.22.3.644-648.1978