Microcluster Physics provides a lucid account of the fundamental physics of all types of microclusters, outlining the dynamics and static properties of this new phase of matter, which is intermediate between a solid and a molecule. Since the original book was published in 1991, the field of microclusters has experienced surprising developments, which are reviewed in this new edition: the determination of atomic structure, spontaneous alloying, the super-shell, fission, fragmentation, evaporation, magnetism, fullerenes, nanotubes, atomic structure of large silicon clusters, superfluidity of He clusters, water clusters in liquid, electron correlation and optimizsation of the geometry, and scattering.