Energías para el siglo XXI
"Published in 25 languages; includes a selection in Braille in eng, fre, spa".
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| Format: | periodical issue biblioteca |
|---|---|
| Language: | spa |
| Subjects: | Energy resources, Energy economics, Energy consumption, Renewable resources, Nonrenewable resources, |
| Online Access: | https://unesdoc.unesco.org/ark:/48223/pf0000074744_spa |
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