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| human origin (MichaelBurov) | |||
| artificial origin | |||
| artificial origin (насаждения) | |||
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human-made (ART Vancouver); man-made (Potato Hill is an almost perfectly symmetrical conical formation just south of the city's lake. When I was young, I imagined that it might be man-made, but was so large that that thought never occurred to anyone else.  coasttocoastam.com ART Vancouver) | |||
| искусственное происхождение: 12 a las frases, 8 temas |
| Astronáutica | 3 |
| Electrónica | 1 |
| Energía nuclear y de fusión | 1 |
| General | 1 |
| Geofísica | 2 |
| Geología | 1 |
| Plástica | 1 |
| Tecnología | 2 |