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00736nam a2200205 u 4500 |
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20051213093529.0 |
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010117s2000 xxu ||||| eng |
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|a 6328213
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|a Sistema de Bibliotecas de la Universidad de Costa Rica
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|a eng
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|a 333.736
|b A698a
|2 20
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| 245 |
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|a Aridity zones and dryland populations :
|b an assessment of population levels in the world's drylands
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| 260 |
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|a New York, New York :
|b United Nations Development Programme,
|c 2000.
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| 300 |
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|a 23 páginas :
|b ilustraciones a color, mapas color
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| 650 |
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|a DESERTIZACION
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| 650 |
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|a REGIONES ARIDAS
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| 650 |
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|x INVESTIGACIONES
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| 917 |
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|a 17-JAN-2001 - JIMENEZ VELASCO, MARTA SYLIA
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| 916 |
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|a Centro Catalográfico
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