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The Effect of Variation in the Calcuim-to-phosphorus Ratio on the Utilization of Nitrogen, Calcium, and Phosphorus by the Growing Chick

Clifton Walter Ackerson

出版	University of Nebraska, College of Agriculture, Agricultural Experiment Station, 1936
URL	http://books.google.com.hk/books?id=sVVwFOSAqKIC&hl=&source=gbs_api