EVALUATION OF TRIALS OF VACCINATION AND REVACCINATION OF CATTLE USING RB51 AND S19 VACCINES BY MONITORING OF THE SEROLOGICAL RESPONSE AND SHEDDING OF THE VACCINAL STRAINS
Assiut Veterinary Medical Journal/Maǧallaẗ Asyūṭ al-ṭibiyyaẗ al-baytariyyaẗ