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|a 574.5 6221993
|
| 245 |
1 |
3 |
|a La situación en el mundo :
|b 1993
|
| 260 |
|
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|a Buenos Aires :
|b Sudamericana,
|c 1993.
|
| 300 |
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|a 290 p. :
|b il.
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| 650 |
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4 |
|a ECOLOGIA
|
| 650 |
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4 |
|a MEDIO AMBIENTE
|
| 650 |
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4 |
|a PLANIFICACION URBANA
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| 650 |
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4 |
|a RECURSOS RENOVABLES
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| 710 |
2 |
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|a Worldwatch Institute (Estados Unidos)
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| 905 |
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|a 492
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| 942 |
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|c LIB
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| 999 |
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|c 14785
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