1. In this issue...

   Legacy Pages: iii - iii

2. Nonmonotonic reasoning, nonmonotonic logics and reasoning about change

   • John Bell

   OriginalPaper Pages: 79 - 108

3. Numerical and symbolic approaches to uncertainty management in AI

   • Dominic A. Clark

   OriginalPaper Pages: 109 - 146

4. ‘The strange story of the Perceptron’

   • Richard S. Forsyth

   Viewpoint Pages: 147 - 155