共 5 条
[1]
AN INTESTINAL HAEMORRHAGE SYNDROME IN PIGS
[J].
BRITISH VETERINARY JOURNAL,
1967, 123 (07)
:286-&
[2]
PENNING PD, 1969, DAIRY FARM, P55
[3]
PENNING PD, 1967, ANNUAL REPORT GRASSL, P86
[4]
SOJKA WJ, 1965, ESCHERICHIA COLI ANI
[5]
TREACHER TT, IN PRESS