Introduction and Overview (R.Z. Bachrach). Advances from a Technique Perspective: Absorption: Surface Absorption Near Edge Structure: XANES (A. Bianconi, A. Marcelli). Surface EXAFS (J.E. Rowe). Photoemission Spectroscopy: Angle Resolved Photoemission (W. Eberhardt). Surface Core Level Spectroscopy (A. Flodstrom et al.). Resonant Photoemission (J.W. Allen). Ion Spectroscopy: Photon Stimulated Desorption (V. Rehn, R.A. Rosenberg). Diffraction and Scattering: Grazing Incidence XRay Scattering (P.H. Fouss et al.). Photo and Auger Electron Diffraction (C.S. Fadley). Index.