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Sulphur-coated Urea as a Nitrogen Source for Cotton

Richard L. MaplesWayne E. SabbeJoseph Lloyd Keogh

出版	Agricultural Experiment Station, Division of Agriculture, University of Arkansas, 1976
URL	http://books.google.com.hk/books?id=0uEk_OUZ7JAC&hl=&source=gbs_api