1. In this issue...

   Legacy Pages: v - vi

2. Qualitative application languages for knowledge acquisition

   • Stuart H. Rubin

   Response Time Pages: 157 - 162

3. Nonmonotonic reasoning

   • F. M. Donini
   • M. Lenzerini
   • M. Schaerf

   OriginalPaper Pages: 163 - 210

4. Issues of non-determinism in PROLOG and the Committed Choice Non-Deterministic logic languages

   • R. Trehan
   • P. F. Wilk

   OriginalPaper Pages: 211 - 232

5. Book reviews

   • Hugh Weston Rooms
   • Daune West
   • Allan Ramsay

   BookReview Pages: 233 - 249

6. Call for papers

   Announcement Pages: i - i