The Force of Symmetry (Hardcover) → Paperback ISBN-13: 9780521404952 ISBN-10: 0521404959 Genres: Science & Math, Engineering & Transportation ? The Force of Symmetry (Paperback) → Hardcover ISBN-13: 9780521455916 ISBN-10: 052145591X Genres: Science & Math, Engineering & Transportation ? Gravity Does Not Exist a Puzzle for the 21st Century (Paperback) ISBN-13: 9789089644466 ISBN-10: 9089644466 Genre: Science & Math ? |