DISCO 92 was held on the Newton Park campus of Bath Collegeof Higher Education, England, April 13-15, 1992. Beside theformal lectures dedicated to design and implementationissues of computer algebra, there were several softwaredemonstrations and an opportunity for system designers tocompare systems.This volume presents the proceedings of the conference. Itcontains 18 papers on a variety of design and implementationissues. One general theme which clearly emerges is the needfor interconnections between systems, as no one systemsincorporates all the facilities that users want. Variouseffortsare being made to design such links, but generallyin limited contexts (suchas the Maple project or the Possoproject).