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Losses of Fertilizers and Pesticides from Claypan Soils
George Edward SmithFred D. WhitakerHerman G. Heinemann
出版Office of Research and Development, U.S. Environmental Protection Agency, 1974
URLhttp://books.google.com.hk/books?id=iSGTrVqDUS4C&hl=&source=gbs_api
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