1. INTRODUCTION

2. SAMPLE SELECTION AND PROCESSING
2.1. Host galaxy correction

3. SPECTRAL ANALYSIS

4. RESULTS
4.1. The continuum source and Balmer Line properties
4.2. Global Baldwin Effect
4.3. Balmer Decrements and Boltzmann Plots
4.4. Balmer decrements and Eddington ratios

5. DISCUSSION AND CONCLUSIONS