I / The Contemporary Structure and Dynamics of the Universe -- Observational Foundations for Assumptions in Cosmology -- Intergalactic Gas -- Confrontation of Lemaître Models and the Cosmological Constant with Observations -- The Hubble Constant and the Deceleration Parameter -- Evidence for Non-Velocity Redshifts -- General Discussion and Short Contributions -- II / The Structure of the Universe -- Superclustering of Galaxies -- The Counts of Radio Sources -- Radio Source Counts at Centimetre Wavelengths -- Observational Foundations of Inhomogeneous Universe -- Field Galaxies and Cluster Galaxies: Abundances of Morphological Types and Corresponding Luminosity Functions -- III / Relic Radiation -- Energy Density of the Relic Radiation -- Large Scale Anisotropy of the Cosmic Microwave Background -- Fine Scale Anisotropy of the Cosmic Microwave Background Radiation -- The Thermal History of the Universe and the Spectrum of Relic Radiation -- The Spectrum of Density Perturbations in an Expanding Universe -- Cosmological Synthesis of the Elements -- IV / The Origin of Structure in the Expanding Universe -- The Formation of Galaxies in Friedmannian Universes -- Whirl Theory of the Origin of Galaxies and Clusters of Galaxies -- Generation of Sound from Primordial Cosmic Turbulence -- General Discussion and Short Contributions -- V / The Structure of Singularities -- General Solutions of the Equations of General Relativity near Singularities -- Singularities in Cosmology -- Isotropization of Homogeneous Cosmological Models -- The Anisotropy of the Universe at Large Times -- General Discussion and Short Contribution -- Large Number Coincidences and the Anthropic Principle in Cosmology -- Low Frequency Gravitational Waves in Cosmology -- VI / Matter-Antimatter Universes and Physical Processes Near the Singularity -- Quantum Descriptions of Singularities Leading to Pair Creation -- Creation of Particles in Cosmology -- Baryon Symmetric Big Bang Cosmology -- The Low Density Symmetric Cosmology -- Confrontation of Antimatter Cosmologies with Observational Data -- Short Contribution -- Concluding Remarks by M. J. Rees -- Vote of Thanks to Organisers by G. B. Field -- Index of Authors -- Index of Subjects.