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Evaluation on the efficacy of several Salmonella vaccines on faecal shedding and colonization of Sal
【机 构】
：
Department of Poultry and Fish Diseases,Faculty of Veterinary Medicine,Alexandria University,Egypt
【出 处】
：
15th World Veterinary Poultry Congress(第十五届禽病大会)
【发表日期】
：
2007年1期
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