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Inner Earth (также Полая Земля -- Hollow Earth: an Inner Earth civilization -- цивилизация внутренней Земли • More recently, JP said he'd visited Inner Earth facilities and subterranean cities where he interacted with the "Ant People," who have been there for centuries or longer.  coasttocoastam.com ART Vancouver) | |||
| Внутренняя Земля: 13 phrases in 8 subjects |
| Astronomy | 1 |
| Electrical engineering | 1 |
| General | 2 |
| Geography | 1 |
| Geology | 1 |
| Geophysics | 3 |
| Makarov | 3 |
| Mathematics | 1 |