Christian Valentin
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This introductory book to the six volume series includes an introduction defining the critical zone for mankind that extends from tree canopy and the …
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One third of the world's soils have already been degraded. The burden on the land continues to grow under the combined pressures of demography, urbani…
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One third of the world's soils have already been degraded. The burden on the land continues to grow under the combined pressures of demography, urbani…
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