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| Galaxies: star formation (1) |
| H II regions (1) |
| ISM: molecules (1) |
| Stars: formation (1) |
| Stars: protostars (1) |
| Galaxies: star formation (1) |
| H II regions (1) |
| ISM: molecules (1) |
| Stars: formation (1) |
| Stars: protostars (1) |