Preface; Quantum chromodynamics chiral symmetry and bag models; Quark problemsin nuclear physics; Nuclear excitation by various probes; Study of collective excitations using the sum-rule approach; Present status of elementary magnetic dipole excitation modes in nuclei; Direct mechanism in nuclear photoreactions; Two-body correlations in photoreactions of light nuclei below pion threshold; Photonuclear reactions at intermediate energies; The quasideuteron approach to (gama, pi) and (gama, n) reactions; Polarization experiments with photons in the nucleon resonances region; Low energy photo-and electrofission; Intemediate energy photofission; Very inelastic electro-and photo-nuclear reactions at intermediate energies; Photoreactions at intermediate energies and the pion optical potential; The delta-hole approach to imediate energy photonuclear reactions; Subnuclear excitations-present status and perspectives; Muon-electron universality and PCAC in muon capture in hydrogen; Nuclear charge RADII and RADII differences from muonic X_ray measurements; Response to spin-isopin longitudinal probes and pion-like excitations in finite nuclei; The ladon facility at frascati; Cohrent effects in pion production by ions on nuclei; Photo-and electrofission of Zmaior ou igual 90 nuclei at intermediate energies.