Subject
- Human ecology in motion pictures1
- Motion pictures and transnationalism1
- Nature conservation in literature1
- Outdoor life in literature1
- Périodiques1
- Philosophy of nature1
- Philosophy of nature in literature1
- Philosophy, Confucian1
- Politique énergétique1
- Power resources1
- Protecció ambiental1
- Regionalentwicklung1
- Renewable energy sources1
- Ressources énergétiques1
- Revistes electròniques1
- Social change1
- Umweltschutz1
- Wilderness areas in literature1
- Zeitschrift1
- periodicals1