Loop amplitudes, anomalies and phenomenology

Preface 8. One-loop diagrams in the bosonic string theory 9. One-loop diagrams in superstring theory 10. The gauge anomaly in type I superstring theory 11. Functional methods in the light-cone gauge 12. Some differential geometry 13. Low-energy effective action 14. Compactification of higher dimensions 15. Some algebraic geometry 16. Models of low-energy supersymmetry Bibliography Index.