प्रस्तावित विषय : खोज निहित
प्रस्तावित विषय : खोज निहित
- History 1,627
- Social aspects 992
- Environmental sciences 960
- Environment 782
- Geography 689
- Ethnology 616
- Social life and customs 600
- Environmental management 540
- Tourism 530
- Environmental Management 412
- Human ecology 395
- Anthropology 392
- Environmental policy 390
- Sports 370
- Roads 330
- Philosophy 329
- Sustainable development 292
- Research 286
- Social conditions 276
- Climatic changes 275
- Physical geography 275
- Folklore 246
- Environmental toxicology 244
- Ecotoxicology 242
- Environmental protection 238
- Environmental conditions 237
- Environmental pollution 236
- Antiquities 231
- Environmental aspects 221
- Harbors 220
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