Subject
- interstellar medium18
- interstellar reddening11
- kron-cousins photometry3
- line intensities166
- magellanic clouds3
- magnetic fields5
- markarian galaxies1
- medium band photometry1
- metallicity2
- milky way galaxy1
- millimeter astronomy50
- molecular physics1
- morgan-keenan classification2
- narrow band photometry5
- o stars1
- open star clusters1
- optical astronomy489
- optical observation1
- photographic photometry1
- photometry660