TY  - JOUR 
T1  - Prophylactic effect of levamisole on rainbow trout (Oncorhynchus mykiss) against Yersinia ruckeri
JO  - Pesquisa Veterinária Brasileira
A1  - Ispir, Unal
SN  - 0100-736X
UL  - 10.1590/S0100-736X2009000900003
VL  - 29 
Y1  - 2009
PB  - Brazil 
ER  -