Search for an ISBN > Netherlands, Belgium (Flemish) > Gradivus
| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1977 | 978-90-6317-621-1 | l. Sprague de Camp;Fletcher Pratt | De Hoorn Van Midgard |
| 1979 | 978-90-6317-861-1 | Daniel F. Galouye | De Simulacron |
| 1980 | 978-90-6317-892-5 | Tanith Lee | Sabella |