Auteurs ayant un livre paru la même année chez un éditeur de Geoff Ballard.
| Auteur | Contexte(s) | Croisements |
|---|---|---|
| John Ballam | Learning tree international (2000) · Learning tree international (2001) | 2 |
| Ellis Horowitz | Learning tree international (2000) · Learning tree international (2001) | 2 |
| J. Carl Wagar | Learning tree international (2000) · Learning tree international (2001) | 2 |
| Adrian Bryan |
| Learning tree international (2000) · Learning tree international (2001) |
| 2 |
| Learning tree international | Learning tree international (2000) · Learning tree international (2001) | 2 |
| Preston White | Learning tree international (2000) · Learning tree international (2001) | 2 |
| Kim Fowler | Learning tree international (2000) · Learning tree international (2001) | 2 |
| Cate McCoy | Learning tree international (2000) · Learning tree international (2001) | 2 |