Admissible superharmonic functions -- Principe de Harnack a la frontiere et problemes de frontiere de Martin -- Courant superficiel et champ magnetostatique associe -- Quasi-units in mixed lattice structures -- Bases in standard balayage spaces -- Autodual H-cones -- Characterization of perturbations of harmonic spaces -- Standard balayage spaces and standard Markov processes -- Riesz potentials on manifolds -- Prolongement surharmonioue dans un espace harmonique Notion de flux -- Principe complet du maximum et principe complet du maximum relatif -- On boundary Harnack principles and singularities of extremal harmonic functions -- Positive eigen elements for an infinitesimal generator of a diffusion semi-group and their integral representations -- Problemes au bord sur un espace harmonique -- A remark on the singular part of a convolution kernel satisfying the domination principle -- Harmonic functions of bounded mean oscillation and a generalization to vector lattices of continuous functions -- A regular boundary supporting representing measures of bounded functions in a Bauer harmonic space -- On the set of semiregular points -- Connecting of local operators and evolution equations on networks -- The classical Dirichlet problem and its generalizations -- Singularities of locally analytic processes -- Support biharmonique et supports harmoniques associes -- Fine and admissible convergence for the unit ball in ?n -- Problem section.