Concurrent Prolog brings together for the first time descriptions of the major concurrent logic programming languages proposed so far for future parallel computer systems. In particular, it describes the concurrent logic programming language Flat Concurrent Prolog, a comprehensive and radical approach to parallel computing that is based on a simple foundation. After surveying recent research in concurrent logic programming languages, these two volumes address all of the relevant aspects of constructing such a parallel computer system. They investigate how systems programming and the implementation of parallel algorithms can be carried out with this language; how advanced program development techniques can be applied; how to embed other high-level languages in it; and how to implement this language efficiently on sequential and parallel computers. The results of these investigations suggest that Flat Concurrent Prolog can serve as a general-purpose high-level machine language for parallel computers. Ehud Y. Shapiro is Senior Scientist, Department of Applied Mathematics, Weizmann Institute of Science. Concurrent Prolog is included in his Logic Programming series. Much of the research describe in the book was stimulated by the Fifth Generation project and cross-fertilization between the authors and ICOT.