Flatland / Sphereland (Paperback) ISBN-13: 9780062732767 ISBN-10: 0062732765 Genres: Literature & Fiction, Science Fiction & Fantasy, Science & Math, Engineering & Transportation 12 Sphereland a Fantasy About Curved Spaces and an Expanding Universe (Paperback) → Paperback ISBN-13: 9780064635745 ISBN-10: 0064635740 Genre: Science Fiction & Fantasy ? |