Agriculture

Vetiver grass : a thin green line against erosion

1993

Environment and land use in Africa

1969 Thomas, M. F. | Whittington, G. W. |

Tsavo regional land use study : final report

1982

Saving the tropical forests

1988 Gradwohl, Judith | Greenberg, Russell |

World resources : a guide to the global environment

NRI socio-economic series

Grain de sel : bulletin trimestriel des l'Inter-Réseaux développement rural

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