TY - JOUR AU - Valverde, A; Dyson, DH; Cockshutt, JR; McDonell, WN; Valliant, AE TI - Comparison of the hemodynamic effects of halothane alone and halothane combined with epidurally administered morphine for anesthesia in ventilated dogs JO - Am J Vet Res VL - 52 PY - 1991 L3 - PubMed-ID: 2035928 SP - 505 EP - 509. ER -