Mean-field approximations to the many-body S-matrix -- Quantum mean-field theory of collective dynamics and tunneling -- Modern theories of irreversible phenomena and entropy; Some applications to nuclear physics -- Non trivial Hartree-Fock studies in the thermodynamic limit -- Nuclear forces and nuclear matter including pions and isobars -- Recent developments in the bonn potential and its application in nuclear matter -- Search for basic properties of the nucleon-nucleon interaction -- Relativistic quantum field approach to nuclear matter and nuclei -- Path integrals, boson expansions and mean field approximations -- Applications of generalized holstein-primakoff transformations to problems of nuclear collective motion -- Theory of metal surfaces: Variational calculation using a correlated wave function -- Many-body effects in the optical properties of quasi-two dimensional systems -- Non-local effects in the electromagnetic properties of interfaces -- Calculation of the coefficients of the nuclear mass formula -- Coupled clusters and coulomb correlations -- Calculation of gaps of superconductors by Coupled Cluster Methods (CCM) -- Correlated Bcs theory -- Microscopic Parameters for Superconductivity -- Phonons in superconducting Pd-H(D) alloys using the coherent potential approximation with off-diagonal disorder -- Recent progress in the understanding of strongly coupled coulomb systems -- The perturbation theory approach to the ground state energy in an infinite fermion system -- Brueckner-bethe calculations of nuclear matter -- Coupled Cluster Description of Relativistic Many Body Systems -- Variational matrix pade approximants applied to few body problems -- Nuclear matter and nuclear hamiltonian -- Excitations and transport in quantum liquids -- Quasiparticle properties in nuclear matter -- New approaches to the study of collective excitations in strongly-interacting fermi systems -- Impurity quasiparticle as a weak inhomogeneity -- Effective free energy for nonlinear dynamics -- Green's function monte carlo and the many-fermion problem -- The stochastic solution of the many-body Schroedinger equation for fermions -- Recent developments and future prospects in CBF theory -- Optimal Jastrow correlations for Fermi liquids -- CBF perturbation corrections to the Jastrow ground-state of the electron gas -- Correlations in bose fluids -- Model hamiltonian for superfluidity -- Consequences of defects on lattice vibrations semiclassical theory -- Spin-alignment in condensed atomic hydrogen -- The born-green-yvon theory of fermion quantum fluids -- Statistical theories of large atoms and molecules -- Electrons, phonons and the optical properties of small metallic particles -- Atomic exchange energy as a density functional -- Liouvillian propagator technique for perturbed wave functions, level shifts and broadenings of composite particles in a many-body medium -- Density functionals from models of the electronic charge density -- Effective hamiltonian theory: Recent formal results and non-nuclear applications -- Applications of moment methods to finite nuclei -- Variational calculations on light nuclei -- Study of light nuclei from 4He to 40Ca with the faht cluster expansion -- Three-body forces in nuclei -- Role of isobars in nuclear independent particle motion -- Hyperons in nuclear matter — an impurity problem -- Pion condensation, equation of state of dense matter and neutron stars -- Structure of baryonic system with pion condensation and its implication in neutron star problems -- Nucleon superfluidity under pion condensation -- Spin-isospin order: critical density in nuclear matter and a possible realization in nuclei -- Group theory and collective degrees of freedom in nuclear many body systems -- List of Papers not contained in the Proceedings.