Commemoration of John Hubbard (1931-1980) -- Scientific papers -- Scaling properties of percolation clusters -- Experimental relevance of percolation -- Theory of dilute anisotropic magnets -- Finite size scaling and phenomenological renormalization -- Geometrical structure and thermal phase transition of the dilute s-state Potts and n-vector model at the percolation threshold -- Percolation, critical phenomena and fractals -- New directions in percolation, including some possible applications of connectivity concepts to the real world -- The present experimental situation in spin-glasses -- Mean field theory for spin glasses -- Equilibrium magnetisation of a spin glass above and below Tg: Comparison with mean field theory -- Spin glass models with short-range interactions: A short review of numerical studies -- Ginzburg-Landau spin-glass models -- Static and dynamic properties of spin glasses -- Stabilization of the order parameter fluctuations in spin glasses -- Order as a consequence of disorder in frustrated Ising models -- Spin glasses with special emphasis on frustration effects -- Localization and interaction effects in a two dimensional electron gas -- Critical behaviour at the mobility edge of the Anderson model of disordered systems -- Numerical results on the Anderson localization problem -- Critical properties of the Anderson mobility edge: Results from field theory -- Localization theory: Some recent results -- Correlation effects in metal-insulator transitions -- Optical and precursive properties approaching the metal to insulator transition in highly doped Si -- Localization in ordered systems -- On effects of electron-electron interactions in disordered electronic systems -- Finite size scaling approach to anderson localisation -- Scaling theory of Anderson localization: A renormalization group approach -- Electron spin resonance in a Fermi glass -- Models of disordered systems.