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5Texto bibliotecaFAO IT
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8Texto bibliotecaUAAAN MX
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10Advances in soil organic matter research the impact on agriculture and the environment Advances in soil organic matter research the impact on agriculture and the environmentby Wilson, W. S., Gray, T. R. G., Greenslade, D. J., Harrison, Roy M., Hayes, M. H. B., British Society of Soil Science, International Humic Substances Society, Royal Society, Joint Symposium 3-4 Sept. 1990:
Published 1991Texto bibliotecaUBA FA