PART I. Introduction (J.V. Sengers et al.). Fundamental Considerations (M.B. Ewing, C.J. Peters). The Virial Equation of State (J.P.M. Trusler). Cubic and Generalized van der Waals Equations (A. Anderko). Perturbation Theory (T. Boublik). Equations of State from Analytically Solvable Integral-Equation Approximations (Yu.V. Kalyuzhnyi, P.T. Cummings). Quasilattice Equations of State for Molecular Fluids (N.A. Smirnova, A.V. Victorov). The Corresponding-States Principle (J.F. Ely, I.M.F. Marrucho). Mixing and Combining Rules (S.I. Sandler, H. Orbey). Mixtures of Dissimilar Molecules (E. Matteoli et al.). Critical Region (M.A. Anisimov, J.V. Sengers). PART II. Associating Fluids and Fluid Mixtures (E.A. Mueller, K.E. Gubbins). Polydisperse Fluids (D. Browarzik, H. Kehlen). Equations of State for Polymer Systems (S.M. Lambert et al.). Self-Assembled Systems (R. Nagarajan, E. Ruckenstein). Ionic Fluids (H. Krienke, J. Barthel). Ionic Fluids Near Critical Points and at High Temperatures (J.M.H. Levelt Sengers et al.). Multiparameter Equations of State (R.T Jacobsen et al.). Subject index.