Look up ISBN > Netherlands, Belgium (Flemish) > Gwendo-Arnhem
| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1987 | 978-90-70725-04-4 | H P Zomer | Neophemas En Hun Kleurmutaties |
| 1988 | 978-90-70725-05-1 | J. Brinkkemper ยท O. Moedt | Kijken naar weide-vogels |
| 1989 | 978-90-70725-06-8 | H. P. M. Zomer | Grass Parrakeets and Their Colour Mutations |