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Massive stars (2) |
Star formation (2) |
Circumstellar disks (1) |
Collapsing clouds (1) |
Compact H II region (1) |
H I line emission (1) |
Interstellar medium (1) |
Massive stars (2) |
Star formation (2) |
Circumstellar disks (1) |
Collapsing clouds (1) |
Compact H II region (1) |
H I line emission (1) |
Interstellar medium (1) |