 | The Fragile Tropics of Latin America. Sustainable Management of Changing Environments (UNU, 1995, 335 p.) |
 |  | Part 4 : The semi-arid north-east |
| | Drought, irrigation, and changes in the sertão of north-east Brazil |
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| The Fragile Tropics of Latin America. Sustainable Management of Changing Environments (UNU, 1995, 335 p.) |
| | Part 4 : The semi-arid north-east |
| | Drought, irrigation, and changes in the sertão of north-east Brazil |
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|
|
|
|