+ wishlist Add to Cart The item has been added Author: T. Van Le Techniques of Prolog Programming with Implementation of Logical Negation and Quantified Goals [9780471571759] Buy More - Save More. Below are the available bulk discount rates for each individual item when you purchase a certain amount Quantity Price Savings 25 - 49 4% 50 - 99 5% 100+ 6% List Price As Low as $193.95 Format: Paperback