Secrets of Fertile Soils:...
Erhard Hennig
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Healthy Soils, Sick Soils:...
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Building Soils for Better...
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Pay Dirt: Farming And...
J I Rodale,
Sir Albert Howard (Introduction by)
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Pay Dirt: Farming And...
J I Rodale,
Sir Albert Howard (Introduction by)
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Soil Organic Matter in...
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Sustainable Soils: The Place...
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George Snyder
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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...
D Vaughan (Editor),
R E Malcolm (Editor)
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Evaluation of Soil Organic...
David S Powlson (Editor),
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Managing Organic Matter in...
Christopher Martius (Editor),
Holm Tiessen (Editor)
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Building Soils for Better...
Fred Magdoff,
Harold Van Es
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Dr. W Flaig,
B Nagar
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