Key points are not available for this paper at this time.
This review examines stellar populations in the galaxy, the Magellanic Clouds, M31 and its companions, globular clusters, and dwarf spheroidal galaxies. The evolution of elliptical galaxies and the missing mass in galaxy halos and in clusters of galaxies are also discussed. (7 figures) (180 references) (BJG)
Sidney van den Bergh (Mon,) studied this question.