共 6 条
[1]
ANDERSON ML, 1991, J AM VET MED ASSOC, V198, P241
[3]
LINDSAY DS, 1989, AM J VET RES, V50, P1981
[4]
NEUFELD JL, 1974, CAN VET J, V15, P156
[5]
POSPISCHIL A, 1984, ZBL VET MED B, V31, P141
[6]
SMART ME, 1973, CAN VET J, V14, P313