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Subject
- active galactic nuclei1
- astronomical models2
- astrophysical masers1
- atomic physics12
- chemical abundances3
- co line emission10
- comets1
- earth (planet)1
- galaxies12
- galaxy kinematics3
- galaxy planes1
- giant stars1
- h i line emission2
- h ii regions1
- infrared astronomy4
- infrared sources2
- interferometry1
- interstellar medium25
- milky way galaxy1
- millimeter astronomy6
