1987 - Pioneering Space Living on the Next Frontier (Paperback) → Hardcover ISBN-13: 9780070480391 ISBN-10: 0070480397 Genres: Science & Math, Engineering & Transportation ? 1986 - Pioneering Space Living on the Next Frontier (Hardcover) → Paperback ISBN-13: 9780070480346 ISBN-10: 0070480346 Genres: Travel, Science & Math ? 1985 - Spacefarers of the '80s and '90s the Next Thousand People in Space (Hardcover) ISBN-13: 9780231059060 ISBN-10: 023105906X Genre: Science & Math ? |