ISBN: 978-1-111-63415-5
ISBN-10: 1-111-63415-7
COLLIER BOOKS · 1962
| See also (possibly by other authors): | ||
| 2011 | Paperback | Explorations |
| 2008 | Paperback | Explorations |
| 1997 | Hardcover | Explorations |
| 1996 | Paperback | Explorations |
| 1992 | Paperback | Explorations |
| 1991 | Mass Market Paperback | Explorations |
| 1989 | Paperback | Explorations |
| 1971 | Hardcover | Explorations. |
| Hardcover | Explorations | |