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Woods, G. T., A. H. Jensen, Jennifer Gossling, H. E. Rhoades, και W. F. Nickelson. The Effect of Medicated Feed On the Nasal Microflora and Weight Gain of Pigs. 1972.

Woods, G. T., et al. The Effect of Medicated Feed On the Nasal Microflora and Weight Gain of Pigs. 1972.