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Riemann
| Helmholtz-Liesches Raumproblem
| Riemann | |
| astr. | Риман |
| Helmholtz-Liesches Raumproblem | |
| math. | проблема пространства Гельмгольца-Ли |
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| Риман (лунный кратер) | |||
| Riemann: 4 phrases in 2 subjects |
| Mathematics | 3 |
| Names and surnames | 1 |