Annu. Rev. Astron. Astrophys. 1977. 15: 69-95 Copyright © 1977 by Annual Reviews. All rights reserved

Reprinted with kind permission from Annual Reviews, 4139 El Camino Way, Palo Alto, California, USA

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Table of Contents

• INTRODUCTION
• SEYFERT GALAXIES CURRENTLY KNOWN
• SURVEYS AND MORPHOLOGY
• EMISSION-LINE SPECTRA
• BALMER DECREMENT AND LINE PROFILES
• CONTINUUM RADIATION AND LUMINOSITIES
• RELATION TO QSOs
• CONCLUSIONS
• REFERENCES