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检索到 2 条 责任者=Kral, David M. 的结果    

 


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  1. 西文图书1.Soil erosion and conservation in the tropics : proceedings of a symposium / S157-53/SEC

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    sponsored by Divisions A-2, A-6, C-3,S-4,and S-7 of the American Society of Agronomy and the Soil Sc
    American Society of Agronomy : 1982.
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  2. 西文图书2.Water potential relations in soil microbiology : proceedings of a symposium / S154.3-53/WPR

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    sponsored by Divisions S-1 and S-3 oftheSoil Science Society of America ; managing editor, David M.
    Soil Science Society of America, 1981.
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