论文部分内容阅读
Evaluation of production and economic performance of two layer flocks vaccinated against Gallibacter
【机 构】
：
Boehringer Ingelheim Vetmedica S.A.de C.V
【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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