A contribution on Coliforms causing mastitis in cows with reference to serotypes and virulence factors of E. coli isolates إسهام ميکروبات الکوليفورم في إحداث التهاب الضرع في الأبقار، مع الإشارة إلي التصنيف السيرولوجي وتحديد عوامل الضراوة لعترات الميکروب القولوني

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