2013 - The Pythagorean Solution (Paperback) → Paperback ISBN-13: 9781596879799 ISBN-10: 1596879793 Genre: Mystery, Thriller & Suspense 1 2005 - The Pythagorean Solution (Paperback) → Paperback ISBN-13: 9781596871137 ISBN-10: 159687113X Genres: Literature & Fiction, Mystery, Thriller & Suspense 8 |