Subject
- ccd photometry2
- chemical abundances2
- galatic evolution2
- galaxy clusters2
- globular star clusters2
- dark matter1
- extinction1
- extra-galactic stars1
- galactic evolution1
- hst photometry1
- metallicity1
- open star clusters1
- planetary nebulae1
- radio astronomy1
- radio sources1
- star atlases1
- star formation1
- stucture1
- supernovae1
- surface photometry1
