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1Published 1991Table of Contents: “...What is sustainable agriculture? -- Strategies of sustainable agriculture -- Soil fertility...”
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3Published 1996Video VHS
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5Published 1994Subjects: “...Sustainable agriculture....”
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6Published 1995Subjects: “...Sustainable development....”
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7Published 1996Subjects: “...Sustainable agriculture....”
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8Published 1992Subjects: “...Sustainable agriculture United States....”
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9Published 1992Subjects: “...Sustainable agriculture United States....”
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