Nature's water wheel
"Published in 29 languages; includes a selection in Braille in eng, fre, spa, kor".
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| Format: | article biblioteca |
|---|---|
| Language: | eng ara chi rus |
| Subjects: | Hydrological cycle, Intergovernmental Hydrological Programme, |
| Online Access: | https://unesdoc.unesco.org/ark:/48223/pf0000062512 |
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