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The down-to-earth summit -- lessening our ecological footprint.
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| Formato: | Texto |
| Lenguaje: | English |
| Publicado: |
2002
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| Materias: | |
| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1241086/ https://www.ncbi.nlm.nih.gov/pubmed/12417495 |