This book completes a major two-volume work on Non-equilibrium Phenomena in Polyatomic Gases and stands as a definitive treatise in this area of chemical physics. It is the only book to provide a cohesive description of polyatomic gases in terms of kinetic theory. The text discusses properties of the effective cross-sections which have been utilized in the expressions for nonequilibrium phenomena in dilute polyatomic gases and the evaluation of such effective cross-sections from molecular scattering theory is outlined. Transport phenomena in rarefied gases, the modeling of the surface scattering operator, and the derivation of boundary-layer effects are also covered. This volume also presents aspects of the collisionless gas regime. Relevant mathematical material, tables of experimental data and effective cross-sections deduced from these data are provided.