Title:
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Defining soil quality for a sustainable environment : proceedings of a symposium sponsored by Divisions S-3, S-6, and S-2 of the Soil Science Society of America, Division A-5 of the American Society of Agronomy, and the North Central Region Committee on Soil Organic matter (NCR-59) in Minneapolis, MN, 4-5 November 1992 / editors, J.W. Doran... [et al.]
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