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Effect of Urea and Urea-ammonium Nitrate Solution (28-0-0) on Barley Emergence and Growth [microform]

Jack Mervon Carefoot

出版	Thesis (M.Sc.)--University of Manitoba, 1971
URL	http://books.google.com.hk/books?id=huhdNAEACAAJ&hl=&source=gbs_api