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| educatie ecologica (1) |
| educatie ecologica--invatamant primar--metode interdisciplinare (1) |
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| invatamant primar (1) |
| invatamant primar--educatie ecologica--aplicatii metodologice (1) |
| invatamant primar--predare-invatare--educatie ecologica--metodologie (1) |
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