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Article Contents

ABSTRACT

1.INTRODUCTION

2.ACCRETION AND THE XRB

3.AGN, THE FIR BACKGROUND AND THE ENERGY FROM STARS

4.UNCERTAINTIES

5.OBSCURATION, METALLICITY AND FUELLING

6.THE MEAN LUMINOSITY OF THE DISTANT AGN DOMINATING THE XRB INTENSITY

7.OBSCURATION IN A GROWING, ISOTHERMAL GALAXY SPHEROID

REFERENCES