Electrotherapy in RehabilitationEdited by Meryl Roth Gersh F. A. Davis, Philadelphia, 1992. pp. 413.£28.00 ISBN 8036-4025.Universal Precautions: Policies, Procedures, and ResourcesEdited by G. Pugliese, P. Lynch and M. M. Jackson. American Hospital Publishing, Inc., Chicago, 1991, pp. 400. $69.95. ISBN 1 55648 055 5.Biosensors: Theory and ApplicationsBy Donald G. Buerk. Technico Publishing AG, Basel 1993, pp. 232. ISBN 0 87762 975 7. Price: SF187.