共 8 条
[4]
THE EMERGENCE OF GRADE-A EGGS AS A MAJOR SOURCE OF SALMONELLA-ENTERITIDIS INFECTIONS - NEW IMPLICATIONS FOR THE CONTROL OF SALMONELLOSIS
[J].
JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION,
1988, 259 (14)
:2103-2107
[5]
THOMSON DG, 1988, DHSS EL88P136 DEP HL
[6]
WALFORD D, 1988, DHSS PLCO889 DEP HLT
[7]
1986, ANN ABSTRACT STATIST
[8]
1988, LANCET, V2, P720