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Article Contents

ABSTRACT

1.INTRODUCTION

2.THE SMOOTH RADIO BACKGROUND

3.WHAT MAKES A RADIO-LOUD GALAXY?

4.LUMINOSITY FUNCTIONS

4.1.Observational results

4.2.Redshift cutoff and interpretation

4.3.Black-Hole abundances

5.HI SEARCHES FOR HIGH-REDSHIFT GALAXIES

6.STELLAR POPULATIONS AT HIGH REDSHIFT

6.1.The golden age

6.2.Alignments as a function of power

6.3.Colors and ages of radio galaxies

7.CONCLUSIONS

REFERENCES