Hans Grauert was one of the world's leading mathematicians in the field of Several Complex Variables; he not only shaped the development of this area decisively but was also responsible for some of its most important results. This representative selection of mathematical papers exhibits Grauert's influential research and reflects two decades of excellence. In this edition, each paper has been augmented by a detailed commentary, thus offering a comprehensive survey of the development of this fascinating subject from its beginnings in M nster and G ttingen. Hans Grauert may be regarded as a direct successor of Gauss, holding a chair at G ttingen that before him was held by Siegel, Weyl, Hilbert, Riemann and Gauss.