This volume constitutes the proceedings of the Fourth International Conference on Algebraic and Logic Programming (ALP '94), held in Madrid, Spain in September 1994.

This volume constitutes the proceedings of the Fourth International Conference on Algebraic and Logic Programming (ALP '94), held in Madrid, Spain in September 1994.

6th International Symposium, PLILP '94, Madrid, Spain, September 14 - 16, 1994. Proceedings Jaan Penjam Manuel Hermenegildo. Preface This volume contains the papers accepted for presentation at the Sixth Interna- tional Symposium on ...