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The Yield Response to and Absorption of Sodium, Boron, Potassium, and Calcium from Different Soil Levels by Several Varieties of Fifteen Vegetable Crops

John Clayton Lingle

出版	Michigan State University of Agriculture and Applied Science. Department of Horticulture, 1954
URL	http://books.google.com.hk/books?id=P6PvdaV9zNkC&hl=&source=gbs_api