Sobolev Am 1

1. Formaldehyde in the Cygnus-X region
2. Evidence for Core-Core Collision in Barnard 68
3. A case investigation of an end-dominated collapse and hub-filament system, G53
4. Ammonia survey of the BGPS sources with the Nanshan 26-m telescope
5. Colliding filaments in the molecular cloud G34
6. Possible collision-induced outflows and triggered star formation in the molecular complex G34
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