General Preface. Preface to volume 1. List of symbols and acronyms. Part I. Basic Aspects of the Structure of Crystalline Surface. 1. Surface crystallography (W.N. Unertl). 2. Thermodynamics and statistical mechanics of surfaces (E.D. Williams, N.C. Bartelt). 3. Surface reconstruction: metal surfaces and metal on semiconductor surfaces (C.T. Chan, K.M. Ho, K.P. Bohnen). 4. Theory of insulator surface structures (J.P. LaFemina). 5. Surface structure of crystalline ceramics (R.J. Lad). 6. Surface structures of elemental and compound semiconductors (C.B. Duke). Part II. Experimental Methods to Study Surface Structure 7. Diffraction methods (E.H. Conrad). 8. Direct imaging and geometrical methods (W.N. Unertl, M.E. Kordesch). Part III. Structure of Adsorbed Layers. 9. Chemically adsorbed layers on metal and semiconductor surfaces (H. Over, S.Y. Tong). 10. The structure of physically adsorbed phases. (J. Suzanne, J.M. Gay). 11. Interactions between adsorbate particles (T.L. Einstein). Part IV. Defects and Phase Transitions at Surfaces 12. Atomic scale defects on surfaces (M.C. Tringides, M.G. Lagally). 13. Phase transitions and kinetics of ordering (L.D. Roelofs). Author index. Subject index.