Dubbelster
| Publisher | A.W. Bruna & Zoon Utrecht/Antwerpen |
| Series | Bruna Science Fiction |
| Translated by | Theo Capel |
| Cover/Jacket Design by | Dick Bruna |
| Cover Art by | Karel Thole |
| Copyright Holder | Robert A. Heinlein |
| Format | Pocket book |
| Language | Dutch |
| Location | Utrecht/Antwerpen |
| This Edition Published | 1977 |
| Copyright | 1956 |
| Pages / Font | 220 pages |
| Series Number | 75 |
| ISBN 10 | 90 229 9075 3 |
| Other | D/1977/0939/115 |
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