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- 01 natural sciences20
- 0103 physical sciences20
- 010303 astronomy & astrophysics19
- 010308 nuclear & particles physics19
- astronomy and astrophysics19
- astrophysics - high energy astrophysical phenomena19
- space and planetary science19
- astrophysics::cosmology and extragalactic astrophysics18
- fos: physical sciences18