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Productivities of Horizons of Seven Benchmark Soils of the Southern Great Plains
Harold V. Eck
United States. Agricultural Research Service. Soil and Water Conservation Research Division
Carl D. Fanning
Robert H. Ford
出版
Agricultural Research Service, U.S. Department of Agriculture
, 1966
URL
http://books.google.com.hk/books?id=QdWODAEACAAJ&hl=&source=gbs_api