1997 - Sharing the Sky a Parent's and Teacher's Guide to Astronomy (Hardcover) → Paperback ISBN-13: 9780306456381 ISBN-10: 0306456389 Genres: Nonfiction, Science & Math, Engineering & Transportation ? 1997 - Sharing the Sky a Parent's and Teacher's Guide to Astronomy (Paperback) → Hardcover ISBN-13: 9780306456398 ISBN-10: 0306456397 ? |