共 27 条
[1]
AALUND O, 1976, NORD VET MED, V28, P487
[2]
ANDRIES K, 1981, VLAAMS DIERGEN TIJDS, V50, P236
[3]
Backstrom L., 1976, Svensk Veterinartidning, V28, P312
[4]
BACKSTROM L, 1978, NORD VET MED, V30, P526
[5]
Baskerville A., 1973, Veterinary Bulletin, V43, P465
[6]
ERIKSEN L, 1982, NORDISK VETERINARMED, V24, P177
[7]
FLESJA KI, 1981, ACTA VET SCAND, V22, P272
[8]
FLESJA KI, 1982, ACTA VET SCAND, V23, P169
[9]
FLESJA KI, 1980, ACTA VET SCANDINAV S, V74, P1
[10]
FUENTES M, 1984, THESIS U MINNESOTA