A Problem Solving Approach to Mathematics (10th Edition) - Hardcover - GOOD

A Problem Solving Approach - Hardcover, by Billstein Rick Libeskind - Very Good

Combinators: A Centennial View - Hardcover, by Stephen Wolfram - Very Good

Problem Solving - Hardcover, by Billstein Rick; Libeskind - Acceptable r

A Problem Solving - Hardcover, by Billstein Rick; Libeskind - Acceptable r

A Problem Solving Approach to Mathematics

A Problem Solving - Hardcover, by Billstein Rick; Libeskind - Acceptable n