2008 - Observing Comets Asteroids Meteors and the Zodiacal Light [Practical Astronomy Handbooks] (Paperback) → Hardcover ISBN-13: 9780521066273 ISBN-10: 0521066271 Genres: Science & Math, Engineering & Transportation ? 1994 - Observing Comets Asteroids Meteors and the Zodiacal Light [Practical Astronomy Handbooks] (Hardcover) → Paperback ISBN-13: 9780521420037 ISBN-10: 0521420032 Genre: Science & Math ? International Halley Watch Amateur Observers' Manual for Scientific Comet Studies (Other) → Paperback ISBN-13: 9780894901027 ISBN-10: 0894901028 Genre: Science & Math ? International Halley Watch Amateur Observers' Manual for Scientific Comet Studies (Paperback) ISBN-13: 9780933346406 ISBN-10: 0933346409 Genre: Science & Math ? |