Het tijdperk der aquanen
| Book | 第四間氷期 |
| Publisher | A.W. Bruna & Zoon Utrecht/Antwerpen |
| Publisher Series | Bruna Science Fiction |
| Copyright Holder | Alfred A. Knopf, Inc. |
| Translated by | Heleen ten Holt |
| Illustrator | Machi Abé |
| Cover Art by | Marion Crezée |
| Cover/Jacket Design by | Dick Bruna |
| Printed by | Mouton, Den Haag |
| Format | Pocket book |
| Language | Dutch |
| Location | Utrecht/Antwerpen |
| This Edition Published | 1973 |
| Pages / Font | 219 pages |
| Series Number | 25 |
| ISBN 10 | 90 229 9025 7 |
| Other | D/1973/0939/67 |
Added by korovalad · Last edited by seppuku