VIRULENCE OF STREPTOCOCCUS FAECIUM ISOLATED FROM FRESHWATER CRAYFISH, PROCAMBARUS CLARKII, TO NILE TILAPIA" OREOCHROMIS NILOTICUS
Assiut Veterinary Medical Journal/Maǧallaẗ Asyūṭ al-ṭibiyyaẗ al-baytariyyaẗ