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PT491 |
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|a 9500707020
|c $18
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|a ag
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0 |
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|a 574.5 6221991
|
| 245 |
1 |
3 |
|a La situación en el mundo :
|b 1991
|
| 260 |
|
|
|a Buenos Aires :
|b Sudamericana,
|c 1991.
|
| 300 |
|
|
|a 297 p. :
|b il.
|
| 650 |
|
4 |
|a CIENCIA Y TECNOLOGIA
|
| 650 |
|
4 |
|a ECOLOGIA
|
| 650 |
|
4 |
|a LEGISLACION AMBIENTAL
|
| 650 |
|
4 |
|a MEDIO AMBIENTE
|
| 710 |
2 |
|
|a Worldwath Institute (Estados Unidos)
|
| 905 |
|
|
|a 491
|
| 942 |
|
|
|c LIB
|
| 999 |
|
|
|c 14774
|d 14774
|