Hardcover
details (USA).
(see also: Leather Bound)
ISBN: 978-0-06-014678-8
ISBN-10: 0-06-014678-8
Harper & Row, Publishers · 1974
| See also (possibly by other authors): | ||
| 1978 | Paperback | The Ultra Secret |
| 1975 | Paperback | The Ultra Secret |
| 1975 | Mass Market Paperback | The Ultra Secret |
| 1974 | Hardcover | The Ultra Secret |