2000 - The 20cm Schmidtcassegrain Telescope a Practical Observing Guide (Paperback) → Hardcover ISBN-13: 9780521644419 ISBN-10: 0521644410 Genres: Science & Math, Engineering & Transportation ? 1995 - Unusual Telescopes (Paperback) → Hardcover ISBN-13: 9780521483933 ISBN-10: 052148393X Genres: Science & Math, Engineering & Transportation ? 1994 - The 20cm Schmidtcassegrain Telescope a Practical Observing Guide (Hardcover) → Paperback ISBN-13: 9780521433600 ISBN-10: 0521433606 Genres: Science & Math, Engineering & Transportation ? 1992 - Unusual Telescopes (Hardcover) → Paperback ISBN-13: 9780521382007 ISBN-10: 0521382009 Genres: Science & Math, Engineering & Transportation, Substores ? |