1. introduction
2. thermodynamical and statistical properties of cleansurfaces
銆€2.1 thermodynamics of a surface at equilibrium
銆€2.2 equilibrium shape of a crystal
銆€2.3 facetting
銆€2.4 the roughening transition
銆€problems
3. atomic structure of surfaces
銆€3.1 surface crystallography
銆€3.2 experimental techniques
銆€problems
4. vibrations at surfaces
銆€4.1 elastic forces in crystals
銆€4.2 bulk modes
銆€4.3 surface modes
銆€4.4 spectral densities of modes
銆€4.5 vibrational thermodynamicai functions
銆€4.6 mean square displacements
銆€problems
5. electronic structure of surfaces
銆€5.1 jeilium model
銆€5.2 nearly free electron model-surface states
銆€5.3 tight-binding approximation
銆€5.4 application of the tight-binding approximation to
銆€5.5 application of the tight-binding approximation tosemiconductor surfaces
銆€5.6 other methods
銆€5.7 surface plasmons in metals
銆€5.8 image potential
銆€5.9 some further remarks on exchange and correlationenergies
銆€5.10 experimen