Earth matters; environmental challenges for the 1980s
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| Main Authors: | , , |
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| Format: | Texto biblioteca |
| Language: | |
| Published: |
Nairobi (Kenya) UNEP
1983
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| Subjects: | ENVIRONMENT, POLLUTION, ENVIRONMENTAL PROTECTION, NATURE CONSERVATION, ENVIRONNEMENT, MEDIO AMBIENTE, PROTECTION DE L'ENVIRONNEMENT, CONSERVATION DE LA NATURE, POLUCION, PROTECCION AMBIENTAL, CONSERVACION DE LA NATURALEZA, |
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