Get What is a Logical System? by D. M. (Professor of Computing Science, Department of Computing, Professor of Computing Science, Department of Computing, Imperial College of Science, Technology and Medicine, University of London) Gabbay at the best price and quality guranteed only at Werezi Africa largest book ecommerce store. The book was published by Oxford University Press and it has pages. Enjoy Shopping Best Offers & Deals on books Online from Werezi - Receive at your doorstep - Fast Delivery - Secure mode of Payment