Annu. Rev. Astron. Astrophys. 1988. 26:
561-630 Copyright © 1988 by Annual Reviews. All rights reserved |
Reprinted with kind permission from Annual Reviews, 4139 El
Camino Way, Palo Alto, California, USA
For a PDF version of the article, click
here.
For a Postscript version of the article, click
here.
Table of Contents
1 Presently at Mount Wilson Observatory of the Carnegie Institution of Washington, 813 Santa Barbara Street, Pasadena, California 91101. Back.