Contents

Preface 5

Acknowledgments...............................................................9

List of Abbreviations................................................................11

1. Introduction................................................................................15

2. Review of Related Literature......................................................36

3. SDP: Concept and Its Evolution.................................................76

4. Provisions and Effectiveness of SDP.....................................105

5. Analysis and Interpretation of Data..........................................142

6. Conclusions, Findings and Recommendations......................258

Appendix - 1......................................................................296

Index..................................................................................303