| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Join In 1 Tests | 978-0-521-00729-0 | 2001 | Karin Rath |
| Join In 2 Tests | 978-0-521-00731-3 | 2001 | " |
| Join In 3 Tests | 978-0-521-00732-0 | 2001 | " |
| Join In 4 Tests | 978-0-521-00734-4 | 2001 | " |
| Join In Starter Tests | 978-0-521-00728-3 | 2001 | " |
W.S. · Walter Schubring · Walter Shafron · Walter Sparn · Walter Spöhring · Walter Springer · Walther Schubring