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Article Contents
- ABSTRACT
- 1. INTRODUCTION
- 2. OPTICAL/FIR BACKGROUND
- 3. COSMIC STAR FORMATION
- 4. STELLAR BARYON BUDGET
- 5. TWO SIMPLE MODELS
- 6. TYPE II AGNS
- 7. SOURCES OF IONIZING RADIATION
- 8. REIONIZATION OF THE IGM
- REFERENCES