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Article Contents

ABSTRACT

1.INTRODUCTION

2.DEFINITIONS AND CLASSIFICATION OF EMISSION-LINE NUCLEI

3.PREVIOUS SURVEYS

4.THE PALOMAR SURVEY OF NEARBY GALAXIES

5.DEMOGRAPHICS OF EMISSION-LINE GALAXIES

6.STATISTICAL PROPERTIES OF LINERS AND SEYFERT NUCLEI
6.1.Emission-Line Luminosity
6.2.Electron Density
6.3.Internal Reddening and Inclination Effects
6.4.Line Profiles and Kinematics

7.SEARCHING FOR BROAD Halpha EMISSION

8.TRANSITION OBJECTS: LINERS IN PARTIAL DISGUISE

9.WHY ARE LINERS WHAT THEY ARE?

10.SUMMARY

11.FUTURE DIRECTIONS

REFERENCES