Advances from an Issue Perspective: Photoemission CrossSections (I. Lindau). Surface and Core Excitons (F.C. Brown). Adsorbates (J. Haase, A.M. Bradshaw). Semiconductor Surface and Interface States (R.D. Bringans, R.Z. Bachrach). Studies of Semiconductor Interfaces (G. Rossi). SiGe Interface Structure Studied with Suface EXAFS and Photoemission (J. Woicik, P. Pianetta). Thin Molecular Solid Films (R.A. Rosenberg, V. Rehn). Advances in Synchrotron Radiation Technology: Undulators and the Properties of Synchrotron Radiation (G.S. Brown). Monochromator Systems (G.P. Williams). Index.