The past decade has seen a healthy increase in the number of studies in the areas constituting language contact research. Prominent among these have been investigations into grammatical aspects of “code-switching,” often covering pairs of languages not previously investigated. Many of the chapters in the book under review are based on papers read at a conference in Bielefeld, Germany, in 1994. While this gives the papers coherence, it means that some of the points made have already been left behind in later publications by the same and other authors.