ENGINEERING APPLICATIONS OF ARTIFICIAL INTELLIGENCE Published 6 times annually. Subscriptions: Institutions (1992) 235.00 or approx US$425.00; two year institutional rate (1992/93) 446.50 or approx US$807.50. North America: Pergamon Press Inc., 660 White Plains Road, Tarrytown, NY 10591-55153, USA. Rest of the World: Pergamon Press Ltd, Headington Hill Hall, Oxford OX3 0BW, England. Tel: Oxford (0865)794141 ENGINEERING OPTIMISATION Published quarterly, since 1974. Gordon and Breach, LondonGo Back Up