Fundamentals: S. Mukamel, Many-Body Effects in Nonlinear Susceptibilities: Beyond the Local-Field Approximation. T. Kobayashi, Time-Resolved Nonlinear Spectroscopy of Conjugated Polymers. Nonlinear Optics in Molecular Media: Y.R. Shen, Quadratic Molecular Nonlinearities at the Air/Water Interface. J. Zyss, I. Ledoux, and J.-F. Nicoud, Advances in Molecular Engineering for Quadratic Nonlinear Optics. T. Kondo and R. Ito, Quadratic Nonlinear Optical Effects in Crystalline Waveguiding Structures. Nonlinear Optics in Polymeric Media: K.D. Singer and J.H. Andrews, Quadratic Nonlinear Optics in Poled Polymer Films: From Physics to Devices. M.G. Kuzyk and C. Poga, Quadratic Electrooptics of Guest-Host Polymers. H.S. Lackritz and J.M. Torkelson, Polymer Physics of Poled Polymers for Second Order Nonlinear Optics. V. Lemoine, J.P. Pocholle, P. Le Barny, and P. Robin, Integrated Optics with Nonlinear Polymers. S.Etemad, G.L. Baker, and Z.G. Soos, Third Order NLO Processes in Polydiacetylenes: Physics, Materials, and Devices. Chapter References. Subject Index.