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| info:eu-repo/classification/AUTOR/Cultura ambiental, educación ambiental, índice de cultura ambiental, áreas naturales protegidas, bachillerato (1) |
| info:eu-repo/classification/AUTOR/Environmental culture, environmental education, environmental culture index, natural protected areas, high-school level (1) |
| info:eu-repo/classification/cti/31 (1) |
| info:eu-repo/classification/cti/3106 (1) |
| info:eu-repo/classification/cti/310601 (1) |
| info:eu-repo/classification/cti/6 (1) |