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условиям существования : 21 phrases in 14 subjects |
Antennas and waveguides | 1 |
Astronautics | 1 |
Aviation | 1 |
Biology | 1 |
Ecology | 1 |
Electronics | 1 |
Energy industry | 1 |
General | 1 |
Historical | 1 |
Makarov | 6 |
Politics | 1 |
Psychology | 2 |
Sociology | 1 |
Technology | 2 |