1. Characterizations of Graphs by their Spectra. 2. Distance-Regular and Similar Graphs. 3. Miscellaneous Results from the Theory of Graph Spectra. 4. The Matching Polynomial and Other Graph Polynomials. 5. Applications to Chemistry and Other Branches of Science. 6. Spectra of Infinite Graphs. Appendix: Spectra of Graphs with Seven Vertices. Bibliography. Bibliographic Index. Index.