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| Lēdmane (1) |
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| air pollution (1) |
| bioindikatori (1) |
| gaisa piesārņojums (2) |
| lichens (1) |
| lihenoindikācija (2) |
| Lēdmane (1) |
| Vides zinātne (2) |
| ķērpji (2) |