ISOLATION, CHARACTERIZATION OF NEWCASTLE DISEASE VIRUS AND COMPARITIVE EFFICACY OF DIFFERENT VACCINE REGIMES IN BROILER BIRDS - F. Afzal; U. Saliha; N. Fawad; S. Ahmed; Habib-ur-Rehman; J. Munawar; G. Naheed; B. Siddique (Journal of Animal and Plant Sciences, 2015)