Allen V. Barker | Buy Cheap Textbooks about Allen V. Barker

1.

Science and Technology of Organic Farming by Barker, Allen V. ISBN: 9781439816127 List Price: $69.95

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Handbook of Plant Nutrition by Barker, Allen V., Pilbeam, ... ISBN: 9780824759049 List Price: $139.95

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Science and Technology of Organic Farming by Barker, Allen V. ISBN: 9780367567569

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Science and Technology of Organic Farming by Barker, Allen V. ISBN: 9780367548674

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Handbook of Plant Nutrition by Barker, Allen V., Pilbeam, ... ISBN: 9781420014877

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Handbook of Plant Nutrition by Barker, Allen V., Pilbeam, ... ISBN: 9781032098630