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Pay Dirt: Farming And...
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Pay Dirt: Farming And...
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Soil Organic Matter in...
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The Role of Organic Matter in...
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Y Avnimelech (Editor)
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Pay Dirt: Farming and...
J I Rodale,
Sir Albert Howard (Introduction by)
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Structure and Organic Matter...
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Soil Organic Matter and...
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Evaluation of Soil Organic...
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Managing Organic Matter in...
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Building Soils for Better...
Fred Magdoff,
Harold Van Es
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