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Article Contents

ABSTRACT

1.INTRODUCTION

2.RADIATIVE FEEDBACK
2.1.Nebular emission-line diagnostics
2.2.Statistical properties of H II regions
2.3.Warm Ionized Medium

3.MECHANICAL FEEDBACK
3.1.Individual shell systems
3.2.Global Mechanical Feedback
3.3.Correspondence with Star Formation
3.4.Interstellar Porosity

4.CONCLUSION

REFERENCES