Invited Papers: Surface chemistry of carbonaceous species (A.T. Bell). Surface properties of carbons (H.P. Boehm). Structure and bonding of adsorbates: investigations with synchrotron radiation (A.M. Bradshaw). Surface characterization of ionic microcrystalline systems by optical spectroscopies (S. Coluccia). The concept of structure-sensitivity in catalysis by oxides (J. Haber). Free and supported metal clusters: structures and reactivity (A. Masson). Metal support interaction (R. Prins, J.H.A. Martens, D.C. Koningsberger). The nature and reactivity of chemisorbed oxygen and oxide overlayers at metal surfaces as revealed by photoelectron spectroscopy (M.W. Roberts). Reactivity and photodynamics of size-selected metal clusters (L. Wöste).