To The Book.- A. Ground State and Near Ground State Phenomena.- 1. From transition metals to normal rare earth metals via heavy fermion systems.- 2. Quasiparticles in narrow band systems.- 3. Dynamical magnetic fluctuations in narrow band metals.- 4. The role of Fermi surface anisotropies in Heavy-fermion Superconductors.- 5. Ordering phenomena in heavy-fermion compounds.- 6. Gaining control over rare earth valence fluctuations.- 7. Narrow linewidth phenomena of dilute d and f atoms in metals.- 8. Point-contact spectroscopy in a heavy-fermion metal: UPt3 vs Cu.- 9. "Soft"-versus "hard" spectroscopies for narrow band materials.- B. Theoretical Descriptions of the Ground State.- 10. Bandstructure and localized descriptions of narrow band systems.- 11. The Molecular Orbital cluster model approach to electronic structure.- 12. Variational Monte-Carlo method for strongly interacting electrons.- 13. Theory of Mott insulators.- 14. Qualitative considerations on transition metal compounds.- 15. The character of band gaps in transition metal compounds.- 16. Narrow band and localization.- 17. Model Hamiltonians and how to determine their parameters.- 18. Local density calculated parameters for the Anderson Hamiltonian.- Some points from the discussion.- C. High Energy Spectroscopies of Narrow Band Materials.- 19. High energy spectroscopies.- 20. High energy spectroscopies as a probe of hybridization, Coulomb correlation energies and occupancies in narrow band systems: Discussion paper.- 21. Observation of low-energy excitations in lanthanide materials by high-resolution photoemission.- 22. The importance of atomic relaxation in core-level spectra for narrow-band systems.- 23. Final state interaction in L3 absorption spectra of Ce and La compounds.- 24. The influence of electronic polarization on the core XPS spectra of Ce-compounds.- Some points from the discussion.- D. High Temperature Superconductors.- 25. Superconducting oxides.- 26. What chemistry is there in high temperature superconductivity? Low energy scale properties of narrow band systems.- 27. Some recent experiences in narrow band phenomena: URu2Si2 and YBa2Cu3O7.- 28. Valence fluctuations in La2-xSrxCuO4.- Compound Index.