Invited Papers -- Positron-Impact Ionization and Positronium Formation -- Inelastic Positron Collisions in Gases -- Positron-Atom Differential Scattering Measurements -- Total and Inelastic Positron Scattering Cross Sections -- Studies of Inelastic Positron Scattering Using 2.3 and 3 M Spectrometers -- Recent Developments in the Theory of Fast Positron-Atom Collisions -- New Understanding of Atomic Physics Using High Velocity Positrons -- Calculations of Scattering Cross Sections and Annihilation Rates in Low Energy Collisions of Positrons with Molecular Hydrogen -- The AB Initio Inclusion of Polarisation Effects in Low-Energy Positron-Molecule Collisions Using the R-Matrix Method -- Positron-Molecule Collisions: Elastic, Inelastic and Differential Cross Section Calculations -- Field Theory of Electron and Positron Scattering from Atomic and Molecular Systems -- The High Brightness Beam at Brandeis -- A High Intensity Positron Beam at the Brookhaven Reactor -- Field Assisted Moderators -- Production of Short-Lived Positron Sources -- Electrostatic Lenses: How to Roll Your Own -- Theoretical Aspects of Positronium Collisions -- Electron Capture from Solids by Positrons -- On the Production of a Timed Positronium Beam by Positron-Gas Scattering -- A Positronium Beam and Positronium Reflection from LiF -- Monoenergetic Ps Created in a Gas and Ps-He Collision Cross Section Measurements -- Positron- (and Electron-)Alkali Atom Total Scattering Measurements -- Theoretical Studies of Low-Energy Positron-Alkali Atom Scattering -- Precision Measurement of the Triplet Positronium Decay Rate in Gases -- The Brookhaven Positron-Hydrogen Scattering Experiment: Motivation and General Scope -- The Brookhaven Positron-Hydrogen Scattering Experiment: Experimental Setup -- Synthesis of Antihydrogen -- Antihydrogen: Production and Applications -- On Antihydrogen Production -- ?+ Charge Exchange, Muonium Formation and Depolarization in Gases -- Slow Muon Physics -- Contributed Papers -- The Inclusion of the Contributions to Low Energy e +H2 Scattering and Annihilation from the Lowest ?u+ and ?u Waves -- Positronium Formation in Positron-Hydrogen Scattering at Intermediate Energies -- Epithermal Positron Effects in Surface Measurements -- A Proposed Source of Atomic Hydrogen Suitable for the Measurement of Total and Partial Scattering Cross Sections -- Angular Correlation Studies of Positron and Positronium Annihilation in Gases -- Formation of Antihydrogen in Excited States in Antiproton-Positronium Collisions -- The Effect of an Electric Field on Free Positron Annihilation in Atomic and Molecular Gases -- Slow Positron Setup at the Giessen 65 MeV Linac -- Interactions between p and H at Intermediate Antiproton Energies -- Formation of Antihydrogen and Destruction of Positronium in $$\bar p$$ + Ps Collisions in the Antiproton Energy Range 2-100 keV -- Comparison of Impact-Ionisation and Charge-Transfer Cross Sections for Positron and Proton Scattering on Helium -- Measurement of the Impact Ionisation and Positronium Formation Cross Sections for Positron Scattering on Molecular Hydrogen -- Auto-Dissociating Resonant States of Positronium Molecules -- Positron-Hydrogen Resonances Associated with the n = 4 Hydrogen and n = 3 Positronium Thresholds -- Calculation of Ps Distribution from Solid Surfaces -- Elastic Scattering of Fast Positrons by Sodium and Potassium Atoms -- Excitation of Helium by Positron Impact and a Comparison with Electron Data -- Differential Cross Sections for Electron and Positron Scattering from Argon -- Ionization of Positronium by Electrons -- Positronium Formation at Condensed Atomic Semilayers of Krypton and Carbon -- Positron-Na Scattering Using CCA -- Elastic Differential Positron Scattering from Argon -- Angular Differential Cross Sections and Moderation Effects -- Positronium Formation in the Excited States (2s, 2p) in Positron-Hydrogen Atom Collisions -- Ionisation of Atomic Hydrogen by Positron Impact -- Cross Sections for .$${e^ + } + {H^ - } \to Ps\left( {n\ell } \right) + H\left( {ls} \right)$$. in Fock-Tani Representation -- Elastic Scattering of Positrons from argon -- Positronium Formation from Atomic Hydrogen -- Positron-Atomic Hydrogen Scattering at Medium to High Energies -- Low Energy Positron Transmission Measurement from Thin Single-Crystal W Foil.