Table of Contents
Editorials
| About This Issue | |
| Robert S. Engelmore | 3 |
Articles
| Towards the Principled Engineering of Knowledge | |
| Mark Stefik, Lynn Conway | 4 |
| Heuristic Search for New Microcircuit Structures: An Application of Artificial Intelligence | |
| Douglas B. Lenat, William R. Sutherland, James Gibbons | 17 |
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