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Some Effects of Feeding Yeast Fermented Mash to Laying Pullets
Roy Styring DearstyneNorth Carolina Agricultural Experiment Station
出版Agricultural Experiment Station of the North Carolina State College of Agriculture and Engineering and N.C. Department of Agriculture, cooperating, 1938
URLhttp://books.google.com.hk/books?id=TZImjx35gKMC&hl=&source=gbs_api