共 22 条
[1]
BERCOVICH Z, 1983, TIJDSCHR DIERGENEESK, V108, P133
[2]
Ellis W. A., 1989, Pig Veterinary Journal, V22, P83
[4]
ELLIS WA, 1986, AM J VET RES, V47, P1458
[8]
ELLIS WA, 1978, VET REC, V103, P327
[9]
FRANTZ JC, 1989, AM J VET RES, V50, P1044
[10]
HANSON LE, 1986, 90TH P ANN M US AN H, P217