2010 - Exploring the Xray Universe (Hardcover) → Paperback, Hardcover ISBN-13: 9780521884839 ISBN-10: 0521884837 Genre: Science & Math ? 1995 - Exploring the Xray Universe (Paperback) → Hardcover ISBN-13: 9780521437127 ISBN-10: 0521437121 Genres: Science & Math, Engineering & Transportation ? 1995 - Exploring the Xray Universe (Hardcover) → Paperback, Hardcover ISBN-13: 9780521261821 ISBN-10: 0521261821 Genres: Science & Math, Engineering & Transportation, Outdoors & Nature ? |